# CorePDFTools

> Free, privacy-first PDF and exam-upload tools that run entirely in the user's web browser. Files are never uploaded to a server; all processing happens locally on the device. No sign-up, no daily limits, no watermarks.

CorePDFTools is a collection of client-side utilities built on JavaScript and WebAssembly. Because nothing is transmitted, the tools are usable for sensitive documents such as identity papers, certificates, contracts and financial statements.

The exam-upload tools are the unusual part. Each one quotes the file-size, format and dimension limits from the issuing body's own notification or portal manual, links to that document, and states plainly where the figures circulating on other sites disagree with it. Where an official source is silent — a pixel size that was never published, for example — the pages say so rather than inventing a number.

## PDF tools
- [Compress PDF to 100KB, 200KB, 500KB — in your browser](https://corepdftools.com/compress-to-100kb.html): Compress a PDF to an exact target size like 100KB or 200KB for exam and government portals. Free, unlimited, and runs entirely in your browser — never uploaded.
- [Compress PDF — shrink file size in your browser](https://corepdftools.com/compress.html): Compress a PDF to a smaller size, free and unlimited. Runs entirely in your browser — your file is never uploaded.
- [Convert PDF to Grayscale — free, in your browser](https://corepdftools.com/grayscale.html): Convert a colour PDF to grayscale free, to reduce file size or avoid colour printing charges. Runs entirely in your browser — your file is never uploaded.
- [JPG to PDF — convert images in your browser](https://corepdftools.com/jpg-to-pdf.html): Convert JPG and PNG images into a single PDF, free and unlimited. Runs entirely in your browser — your images are never uploaded.
- [Merge PDF — combine PDFs in your browser](https://corepdftools.com/merge.html): Merge multiple PDF files into one, free and unlimited. Everything runs in your browser — your files are never uploaded.
- [OCR PDF — extract text from scans in your browser](https://corepdftools.com/ocr.html): Extract text from scanned PDFs with OCR, free and unlimited. Runs entirely in your browser — your file is never uploaded.
- [Organize PDF Pages — reorder & delete in your browser](https://corepdftools.com/organize.html): Reorder and delete PDF pages visually, free and unlimited. Runs entirely in your browser — your file is never uploaded.
- [Add Page Numbers to PDF — free, in your browser](https://corepdftools.com/page-numbers.html): Add page numbers to a PDF free. Choose position, format, start page and first number. Runs entirely in your browser — your file is never uploaded.
- [PDF to JPG — convert pages to images in your browser](https://corepdftools.com/pdf-to-jpg.html): Convert each PDF page into a JPG image, free and unlimited. Runs entirely in your browser — your file is never uploaded.
- [Protect PDF — add a password in your browser](https://corepdftools.com/protect.html): Password-protect a PDF, free and unlimited. Encryption happens entirely in your browser — your file is never uploaded.
- [Rotate PDF — turn pages in your browser](https://corepdftools.com/rotate.html): Rotate PDF pages 90, 180 or 270 degrees, free and unlimited. Runs entirely in your browser — your file is never uploaded.
- [Sign PDF — add your signature in your browser](https://corepdftools.com/sign.html): Draw a signature and place it on your PDF, free and unlimited. Runs entirely in your browser — your file is never uploaded.
- [Split PDF — extract pages in your browser](https://corepdftools.com/split.html): Split a PDF by page range or extract every page, free and unlimited. Runs entirely in your browser — your file is never uploaded.
- [Watermark PDF — add text in your browser](https://corepdftools.com/watermark.html): Add a text watermark to every page of a PDF, free and unlimited. Runs entirely in your browser — your file is never uploaded.

## Exam and commission upload tools
- [APPSC Photo Size — 3.5x4.5 cm, 50 KB, Name and Date](https://corepdftools.com/appsc-photo.html): Crop your APPSC photo to 3.5x4.5 cm under 50 KB and print your name and the date on it, which APPSC requires and other resizers skip. Andhra Pradesh PSC OTPR.
- [APPSC Signature Size — 3.5x1.5 cm, 30 KB](https://corepdftools.com/appsc-signature.html): Trim and frame your APPSC signature to 3.5x1.5 cm under the 30 KB ceiling for Andhra Pradesh PSC OTPR, uploaded separately from the photograph.
- [BPSC Signature Size — Both Specs BPSC Published](https://corepdftools.com/bpsc-signature.html): BPSC states its signature spec twice and the two contradict each other. This tool builds both — 15 KB at 220x100 and 20 KB at 150-220 x 250-320 — from one scan, and explains why there is no photo upload.
- [GATE Photo Size and Crop — 60-70% Face Rule](https://corepdftools.com/gate-photo.html): Crop your GATE photo to the 60-70% face rule, with the upper bound most tools ignore, inside GATE’s aspect, resolution and 5-600 KB limits. Calibrated on GATE’s own sample photographs.
- [GATE Signature Size and Crop — 70-80% Coverage Rule](https://corepdftools.com/gate-signature.html): Crop your GATE signature to the 70-80% coverage rule, with the upper bound most tools ignore, inside GATE’s 2.75-3.75 aspect, 250x80-580x180 pixel and 3-300 KB limits. Calibrated on GATE’s own sample signatures.
- [GPSC Photo Size — 3.6x5 cm under 15 KB](https://corepdftools.com/gpsc-photo.html): Gujarat PSC allows only 15 KB — the tightest limit anywhere. Resize to 3.6x5 cm without wrecking the picture. GPSC OJAS. Gujarat, not Goa.
- [GPSC Signature Size — 7.5x2.5 cm under 15 KB](https://corepdftools.com/gpsc-signature.html): Gujarat PSC wants a 7.5x2.5 cm signature under 15 KB — a wide, shallow frame and the tightest limit anywhere. GPSC OJAS. Gujarat, not Goa.
- [HPPSC Photo Size — 110x140 px under 40 KB](https://corepdftools.com/hppsc-photo.html): Himachal Pradesh PSC wants exactly 110x140 px in .jpg under 40 KB, and states no minimum. Black-and-white is accepted. Himachal, not Haryana HPSC.
- [HPPSC Signature Size — 140x110 px, Black Ink](https://corepdftools.com/hppsc-signature.html): Himachal Pradesh PSC wants a 140x110 px signature in black ink under 40 KB. The frame is nearly square, which surprises people — here is why. Not Haryana HPSC.
- [HPSC Photo Size — Haryana PSC, Both Portals](https://corepdftools.com/hpsc-photo.html): Haryana PSC runs two application portals with different photo rules: 132x170-160x204 px under 500 KB, or 100x100-150x150 px under 200 KB. Pick yours and resize.
- [HPSC Signature Size — Haryana PSC, Both Portals](https://corepdftools.com/hpsc-signature.html): Haryana PSC signature: 132x57-160x68 px under 500 KB on the registration portal, or 50x50-150x150 px under 50 KB on the other. Pick your portal and resize.
- [IBPS PO Photo, Signature, Thumb & Declaration Sizes](https://corepdftools.com/ibps-po.html): Prepare all four IBPS PO image uploads - photograph, signature, left thumb impression and handwritten declaration - to the exact sizes CRP PO/MT-XVI requires. Runs in your browser, nothing uploaded.
- [JEE Main Document Size — 50KB to 300KB PDF](https://corepdftools.com/jee-documents.html): Compress JEE Main certificates to the 50-300 KB PDF range NTA requires, without dropping under the minimum. Verified from the JEE Main 2026 Information Bulletin. Runs in your browser, nothing uploaded.
- [JPSC Photo Size — 10–200 KB at 200 DPI](https://corepdftools.com/jpsc-photo.html): Jharkhand PSC’s OTR wants 10–200 KB in .jpg at a minimum of 200 DPI, in colour, under three months old — not the 15–25 KB published everywhere. It states no pixel size at all.
- [JPSC Signature Size — 4–30 KB, 200 DPI, Black Ink](https://corepdftools.com/jpsc-signature.html): Jharkhand PSC’s OTR wants a 4–30 KB signature in .jpg at 200 DPI, in black ink on white — though its own guide also allows dark blue. Here is the conflict, and both readings.
- [Kerala PSC Photo Size — 150x200 px, 30 KB, Name and Date](https://corepdftools.com/keralapsc-photo.html): Resize your Kerala PSC Thulasi photo to exactly 150x200 px under 30 KB and print the name-and-date band Kerala requires. Missing it means non-appealable rejection.
- [Kerala PSC Signature Size — 150x100 px, 30 KB](https://corepdftools.com/keralapsc-signature.html): Trim and frame your Kerala PSC Thulasi signature to exactly 150x100 px under 30 KB. Note the height is 100, not the 200 used for the photograph.
- [KPSC Document Size — Identity Proof 50 KB to 200 KB JPEG](https://corepdftools.com/kpsc-documents.html): Batch-resize your KPSC Aadhaar, PAN or Ration Card scans into the 50 KB to 200 KB JPEG band, and see which uploads need PDF instead. Free, in your browser.
- [KPSC Photo Size — 50 KB to 200 KB, JPEG](https://corepdftools.com/kpsc-photo.html): Resize your KPSC photo into the 50 KB to 200 KB JPEG band the Karnataka PSC portal checks, including the 50 KB minimum. No invented pixel size. Free, in your browser.
- [KPSC Signature Size — 50 KB to 70 KB, JPEG](https://corepdftools.com/kpsc-signature.html): KPSC needs your signature between 50 KB and 70 KB. A signature compresses to under 10 KB, so the job is making it bigger honestly. Free, runs in your browser.
- [MPSC Photo Size and Crop — 3.5x4.5 cm, 50 KB](https://corepdftools.com/mpsc-photo.html): Crop your MPSC photo to 3.5x4.5 cm under 50 KB, with the solid-colour background rule most tools get backwards, and a file name inside MPSC’s 10-character limit.
- [MPSC Signature Size and Crop — 3.5x1.5 cm, 50 KB](https://corepdftools.com/mpsc-signature.html): Trim and frame your MPSC signature to 3.5x1.5 cm under 50 KB, check it is in the black ink MPSC requires, and name it inside the 10-character limit.
- [NEET Certificate Compressor — 50KB to 300KB PDF](https://corepdftools.com/neet-documents.html): Compress NEET certificates to the 50-300 KB PDF range NTA requires, without dropping under the minimum. Verified from the NEET UG 2026 Information Bulletin. Runs in your browser, nothing uploaded.
- [OPSC Photo Size — 150x200 px, under 150 KB](https://corepdftools.com/opsc-photo.html): OPSC needs 150x200 px under 150 KB, not the 200x240 published elsewhere. Resize for the e-Chayan portal and check the blur rule. Odisha PSC, formerly Orissa.
- [OPSC Signature Size — 200x100 px, under 150 KB](https://corepdftools.com/opsc-signature.html): OPSC needs a 200x100 px signature under 150 KB, not the 140x60 every other page publishes. Landscape, unlike the photo. For the Odisha PSC e-Chayan portal.
- [OPSC Thumb Impression Size — 150x200 px, under 150 KB](https://corepdftools.com/opsc-thumb.html): OPSC requires a thumb impression as well as a photo and signature, at 150x200 px under 150 KB. The profile will not save without it. Most guides omit it entirely.
- [PPSC Photo Size — 10 KB to 40 KB, No Pixel Size](https://corepdftools.com/ppsc-photo.html): Punjab PSC asks for 10 KB to 40 KB in JPG and publishes no pixel dimensions at all. Hit the band at both ends without being locked to an invented shape.
- [PPSC Signature Size — 10 KB to 40 KB, Black or Blue Ink](https://corepdftools.com/ppsc-signature.html): Punjab PSC asks for a 10 KB to 40 KB signature in black or blue ink on white paper. This checks the band and measures the ink colour. No invented pixel size.
- [RPSC Signature Size — 20 to 50 KB, English and Hindi](https://corepdftools.com/rpsc-signature.html): Rajasthan PSC wants two signatures, English and Hindi, each JPEG at 20–50 KB. Prepare both here. RPSC captures your photo live — there is no photo upload.
- [RPSC Thumb Impression Size — 20 to 50 KB JPEG](https://corepdftools.com/rpsc-thumb.html): Rajasthan PSC needs a left thumb impression in JPEG at 20–50 KB for its OTR KYC step. Resize it here. RPSC captures your photo live — there is no photo upload.
- [RRB Signature Resizer — 30KB to 49KB, CEN 02/2026](https://corepdftools.com/rrb-signature.html): Resize your RRB signature scan to the 30-49 KB range CEN 02/2026 requires. Note: RRB no longer asks for a photograph upload - it captures a live photo. Runs in your browser, nothing uploaded.
- [SSC Signature Resizer — 10KB to 20KB for CGL 2026](https://corepdftools.com/ssc-signature.html): Resize your SSC signature to the 10-20 KB range the CGL 2026 notice requires. Note: SSC no longer asks for a photograph upload - it captures a live photo. Runs in your browser, nothing uploaded.
- [TGPSC Certificate Size — 40 KB to 500 KB, JPG or PNG](https://corepdftools.com/tgpsc-certificates.html): Resize every TGPSC OTR certificate scan into the 40 KB to 500 KB band at once. Handles the 40 KB minimum most tools ignore. Free, in your browser.
- [TGPSC Photo Size — 3.5x4.5 cm, 4 KB to 50 KB](https://corepdftools.com/tgpsc-photo.html): Resize your TGPSC OTR photo to 3.5x4.5 cm inside the 4 KB to 50 KB band Telangana PSC actually checks. Free, runs in your browser. Formerly TSPSC.
- [TGPSC Signature Size — 3.5x1.5 cm, 1 KB to 30 KB](https://corepdftools.com/tgpsc-signature.html): Trim and frame your TGPSC OTR signature to 3.5x1.5 cm inside the 1 KB to 30 KB band for Telangana PSC, uploaded separately from the photograph.
- [TNPSC Photo with Name and Date — 20KB to 50KB](https://corepdftools.com/tnpsc-photo.html): Prepare your TNPSC photo: crop, add the required name and date band, and hit the 20-50 KB range as Photograph.jpg. Verified from the TNPSC notification. Runs in your browser.
- [TNPSC Signature Resizer — 10KB to 20KB, 6x2 cm](https://corepdftools.com/tnpsc-signature.html): Prepare your TNPSC signature: crop the 6x2 cm box and hit the 10-20 KB range as Signature.jpg. Verified from the TNPSC notification. Runs in your browser.
- [UPPSC Photo Size — 5x6 cm, OTR](https://corepdftools.com/uppsc-photo.html): UPPSC wants a 5x6 cm coloured photo for its e-Pariksha OTR. The manual states no KB limit, so we do not invent one. Uttar Pradesh PSC — not UPSC.
- [UPPSC Signature Size — 6x3 cm, Black Ball Point](https://corepdftools.com/uppsc-signature.html): UPPSC wants a 6x3 cm signature in black ball point pen for its OTR — stricter than most, blue included. The manual states no KB limit. Uttar Pradesh PSC, not UPSC.
- [UPSC Upload Checker — will your files be accepted?](https://corepdftools.com/upsc-check.html): Check your UPSC photo, signature and certificates before you upload. Verifies format, size range, dimensions and the exact filename UPSC requires. Runs in your browser, nothing uploaded.
- [UPSC Document Upload — Correct Size and Filename](https://corepdftools.com/upsc-documents.html): Prepare UPSC certificates for upload: 50KB-300KB PDF with the exact filename the portal requires. Verified from UPSC instructions. Runs in your browser, nothing uploaded.
- [UPSC Photo ID Resizer — Aadhaar to 20KB-200KB JPG](https://corepdftools.com/upsc-id-card.html): Resize your Aadhaar or photo ID for UPSC to a 20KB-200KB JPG named id_card. Verified from UPSC instructions. Runs in your browser - your ID is never uploaded.
- [UPSC Photo Resizer — 20KB to 200KB, correct crop](https://corepdftools.com/upsc-photo.html): Resize your UPSC photo to 20KB-200KB JPG with 75% face coverage and the exact filename. Verified from UPSC instructions. Runs in your browser, nothing uploaded.
- [UPSC Signature Resizer — 20KB to 100KB, 350-500px](https://corepdftools.com/upsc-signature.html): Resize your UPSC triple-signature scan to 20KB-100KB JPG at 350-500 pixels with the exact filename. Verified from UPSC instructions. Runs in your browser.

## Guides
- [How to Add a Watermark to a PDF](https://corepdftools.com/blog/add-watermark-to-pdf.html): Stamp text like CONFIDENTIAL or DRAFT across every page of a PDF, free and in your browser.
- [Are Online PDF Tools Safe? What to Check First](https://corepdftools.com/blog/are-online-pdf-tools-safe.html): What happens to your files when you use an online PDF tool, the real risks, and how to choose a private option.
- [How to Choose a Free PDF Tool (Without the Catches)](https://corepdftools.com/blog/best-free-pdf-tools.html): Free PDF tools vary widely. Here's what 'free' really means and how to avoid the common traps.
- [How to Combine Scanned Pages Into One PDF](https://corepdftools.com/blog/combine-scanned-pages-into-one-pdf.html): Turn separate scanned pages or images into a single, ordered PDF document.
- [How to Compress a PDF to 100KB (Free, No Upload)](https://corepdftools.com/blog/compress-pdf-to-100kb.html): Step-by-step guide to compress any PDF to under 100KB for exam and government form uploads — entirely in your browser, no files uploaded.
- [How to Compress a PDF to 200KB Online (Free)](https://corepdftools.com/blog/compress-pdf-to-200kb.html): Reduce any PDF to under 200KB for portal and form uploads, free and in your browser. No sign-up, no file uploads.
- [Compress PDF to 300KB Online — Free Step-by-Step](https://corepdftools.com/blog/compress-pdf-to-300kb.html): Get your PDF under 300KB for uploads while keeping it readable. Free, browser-based, nothing uploaded.
- [How to Compress a PDF to 500KB (Free Online Tool)](https://corepdftools.com/blog/compress-pdf-to-500kb.html): Reduce a PDF to under 500KB for email and upload limits, free and private in your browser.
- [How to Compress a PDF Without Losing Quality](https://corepdftools.com/blog/compress-pdf-without-losing-quality.html): Understand what really happens when you compress a PDF, and how to shrink files while keeping text sharp and selectable.
- [How to Compress a PDF Without Uploading It Anywhere](https://corepdftools.com/blog/compress-pdf-without-uploading.html): Why browser-based PDF compression keeps your files private, and how to shrink a PDF without sending it to a server.
- [How to Compress a Scanned PDF (Without Making It Unreadable)](https://corepdftools.com/blog/compress-scanned-pdf.html): Scanned PDFs are large because every page is an image. Here's how to shrink them while keeping the text legible.
- [How to Convert JPG Images to a PDF (Free)](https://corepdftools.com/blog/convert-jpg-to-pdf.html): Turn one or many JPG or PNG images into a single PDF, in order, free and in your browser.
- [How to Convert a PDF to JPG Images](https://corepdftools.com/blog/convert-pdf-to-jpg.html): Turn each page of a PDF into a high-quality JPG image, free and without uploading.
- [How to Delete Pages From a PDF](https://corepdftools.com/blog/delete-pages-from-pdf.html): Remove unwanted pages — blanks, extras, or sensitive pages — from a PDF for free.
- [How to Edit a PDF on Your Phone (Free)](https://corepdftools.com/blog/edit-pdf-on-phone.html): Merge, split, compress, and sign PDFs directly from your phone's browser — no app install needed.
- [How to Extract Specific Pages From a PDF](https://corepdftools.com/blog/extract-pages-from-pdf.html): Pull out just the pages you need from a PDF into a new file, free and in your browser.
- [What Does 'Flatten a PDF' Mean?](https://corepdftools.com/blog/flatten-pdf-explained.html): A plain-language explanation of flattening a PDF, why people do it, and when you need to.
- [How Converting a PDF to Grayscale Reduces Its Size](https://corepdftools.com/blog/grayscale-pdf-to-reduce-size.html): Why grayscale shrinks scanned and image PDFs, and when it's the right move for upload limits.
- [How to Merge PDF Files Online (Free, No Upload)](https://corepdftools.com/blog/how-to-merge-pdf-files.html): Combine several PDFs into one document for free, right in your browser. Reorder pages and keep everything private.
- [How to Rearrange and Delete PDF Pages](https://corepdftools.com/blog/how-to-rearrange-pdf-pages.html): Reorder, remove, and organize the pages of a PDF visually — free and private.
- [How to Rotate Pages in a PDF (and Save It)](https://corepdftools.com/blog/how-to-rotate-pdf.html): Permanently rotate sideways or upside-down PDF pages so they display correctly everywhere.
- [How to Sign a PDF Electronically (Free)](https://corepdftools.com/blog/how-to-sign-a-pdf.html): Add your signature to a PDF by drawing it and placing it on the page — free, private, no upload.
- [How to Remove a Password From a PDF You Own](https://corepdftools.com/blog/how-to-unlock-pdf.html): Remove a known password from a PDF so it opens without one — for files you have the password to.
- [How to Combine Multiple Images Into One PDF](https://corepdftools.com/blog/images-to-single-pdf.html): Merge several photos or scans into a single, ordered PDF document — free and private.
- [PDF Guides & Tips — CorePDFTools Blog](https://corepdftools.com/blog/index.html): Practical, no-nonsense guides on compressing, merging, splitting, signing and securing PDFs — all doable free and privately in your browser.
- [How to Merge PDF Files Without Losing Quality](https://corepdftools.com/blog/merge-pdf-without-losing-quality.html): Combine multiple PDFs into one without any quality loss. Learn what causes degradation and how to avoid it.
- [How to Extract Text From a Scanned PDF (OCR)](https://corepdftools.com/blog/ocr-scanned-pdf.html): Turn a scanned, image-only PDF into searchable, copyable text using OCR — free and in your browser.
- [How to Password-Protect a PDF (Free, In Your Browser)](https://corepdftools.com/blog/password-protect-pdf.html): Add a password to a PDF so only the right people can open it — encrypted locally, never uploaded.
- [Preparing PDF Documents for Government Job Applications](https://corepdftools.com/blog/pdf-for-government-job-application.html): A practical checklist for getting your certificates, photo, and signature into the right PDF size and format for government and exam portals.
- [How to Add Page Numbers to a PDF](https://corepdftools.com/blog/pdf-page-numbers.html): Add clear page numbers to a PDF for reports, contracts, and submissions.
- [PDF Upload Rejected for Being Too Large? Here's the Fix](https://corepdftools.com/blog/pdf-upload-rejected-too-large.html): What to do when a portal rejects your PDF for exceeding the size limit — practical fixes that actually work.
- [PDF or Image: Which Should You Upload to a Form?](https://corepdftools.com/blog/pdf-vs-image-which-to-upload.html): When a portal accepts both, here's how to decide between submitting a PDF and a JPG.
- [How to Reduce PDF File Size (5 Practical Ways)](https://corepdftools.com/blog/reduce-pdf-file-size.html): Five reliable ways to make a PDF smaller, from image downsampling to removing unused content — with the trade-offs explained.
- [How to Make a PDF Small Enough to Email](https://corepdftools.com/blog/reduce-pdf-for-email.html): Get past email attachment limits by shrinking your PDF the right way.
- [How to Scan Documents to PDF (Small and Clear)](https://corepdftools.com/blog/scan-to-pdf-tips.html): Settings and habits that produce scanned PDFs that are both legible and small enough to upload.
- [How to Split a PDF Into Multiple Files](https://corepdftools.com/blog/split-pdf-into-multiple-files.html): Extract specific pages or split a PDF into separate files, free and in your browser.
- [What Is a PDF, and Why Is It Everywhere?](https://corepdftools.com/blog/what-is-a-pdf.html): A beginner-friendly explanation of what PDF files are, why they look the same everywhere, and what makes them special.
- [Why Is My PDF So Large? (And How to Fix It)](https://corepdftools.com/blog/why-is-my-pdf-so-large.html): The common reasons PDFs balloon in size — high-res images, embedded fonts, scans — and how to fix each one.

## Site
- [Contact Us — CorePDFTools](https://corepdftools.com/contactus.html): Get in touch with CorePDFTools by email at contactus@corepdftools.com for questions, feedback, bug reports, or tool suggestions.
- [FAQ — CorePDFTools](https://corepdftools.com/faq.html): Answers to common questions about CorePDFTools: privacy, file uploads, compression quality, supported browsers, and more.
- [PDF Glossary — 200+ PDF Terms Explained](https://corepdftools.com/glossary.html): A plain-English glossary of 200+ PDF terms — conversion, compression, encryption, signatures, OCR, PDF standards and client-side processing. Searchable, free, no sign-up.
- [How CorePDFTools Works — Private, In-Browser PDF Tools](https://corepdftools.com/how-it-works.html): A plain-language explanation of how CorePDFTools processes PDFs entirely in your browser, the libraries it uses, and what each tool does to your file.
- [CorePDFTools — Private PDF tools that run in your browser](https://corepdftools.com/index.html): Free, private PDF tools that run entirely in your browser. Merge, split, compress, convert, sign and protect PDFs — your files are never uploaded, with no sign-up and no limits.
- [More Free Tools — Our Network](https://corepdftools.com/more-tools.html): Explore our network of free, independent web tools — calculators, converters, developer utilities and more. No sign-ups, no limits.
- [Privacy Policy — CorePDFTools](https://corepdftools.com/privacy.html): How CorePDFTools handles your data: your files are never uploaded, while the site uses Google Analytics, Google AdSense and Adsterra with cookies.

## Notes

- Every tool runs client-side. No file is uploaded, so no server copy exists.
- Exam figures are quoted from the issuing body and each page links its source.
- Last generated: 2026-08-31