94+ modern PDF tools that never leave your browser
Merge, split, compress, convert, sign, OCR, edit, protect — every tool runs locally on your device. Fast, private and free forever.
All PDF tools
Search or filter by category — every tool is 100% client-side.
Merge PDF
OrganizeCombine multiple PDFs into one file
Split PDF
OrganizeExtract pages or split into multiple files
Compress PDF
OptimizeReduce PDF file size while keeping quality
PDF to JPG
ConvertConvert each PDF page into a JPG image
JPG to PDF
ConvertConvert JPG/PNG images into a single PDF
Rotate PDF
EditRotate one, several, or all pages of a PDF
Organize PDF
OrganizeReorder or delete pages with drag & drop
Watermark PDF
EditAdd a text watermark to every page
Add Page Numbers
EditInsert page numbers in any position
Protect / Unlock PDF
SecurityAdd or remove a password from a PDF
PDF Viewer
EditOpen and read any PDF in your browser
Sign PDF
EditDraw, type or upload a signature and place it on your PDF
Edit PDF
EditAdd text, images and shapes to any PDF page
OCR PDF
ConvertMake scanned PDFs searchable with text recognition
Redact PDF
SecurityBlack-out sensitive areas on PDF pages
Crop PDF
EditTrim margins or crop pages to a custom size
PDF to PNG
ConvertConvert each page of a PDF to a lossless PNG image
PDF to Text
ConvertExtract all text from a PDF as a .txt file
Extract Images
ConvertPull every embedded image out of a PDF
HTML to PDF
ConvertConvert HTML or Markdown into a PDF document
Unlock PDF
SecurityRemove a known password from a protected PDF
Flatten PDF
EditFlatten form fields and annotations into the page
Reverse PDF
OrganizeReverse the order of all pages in a PDF
Resize PDF
OptimizeChange every page to A4, Letter or another standard size
N-up PDF
OrganizePlace 2, 4 or 6 pages on a single sheet
Edit PDF Metadata
EditView and edit PDF Title, Author, Subject and Keywords
PDF to Markdown
ConvertExtract text from a PDF as a Markdown (.md) file
Grayscale PDF
OptimizeConvert a colour PDF into black & white
Compare PDF
EditFind text differences between two PDFs
Header & Footer
EditAdd custom header and footer text to every page
Bates Numbering
EditAdd legal-style sequential numbers (e.g. ABC000001)
Stamp PDF
EditPlace a logo or image stamp on every page
Scan to PDF
ConvertUse your camera to scan documents into a PDF
CSV to PDF
ConvertConvert a CSV spreadsheet into a paginated PDF table
Delete PDF Pages
OrganizeQuickly remove pages by number or range
Repair PDF
OptimizeTry to fix a damaged or unreadable PDF file
Text to PDF
ConvertTurn plain text or notes into a clean PDF
Search PDF
EditFind every occurrence of a word or phrase
Blank PDF Generator
ConvertMake blank, lined, grid or dot-grid PDFs
Booklet PDF
OrganizeRe-impose pages for folded-booklet printing
Invert PDF Colours
EditMake a dark-mode (inverted) version of any PDF
PDF Contact Sheet
OrganizeOne overview PDF showing thumbnails of every page
Markdown to PDF
ConvertConvert Markdown notes into a styled PDF
Mirror PDF
EditFlip pages horizontally or vertically
Odd / Even Split
OrganizeSeparate odd and even pages into two PDFs
PDF Word Counter
EditCount words, characters and reading time
PDF Outline Viewer
EditView and export the bookmarks (TOC) of a PDF
Slideshow PDF
ConvertTurn images into a 16:9 presentation PDF
PNG to PDF
ConvertConvert PNG images into a single PDF
WebP to PDF
ConvertConvert modern WebP images to PDF
PDF to WebP
ConvertExport every PDF page as a WebP image
Interleave PDFs
OrganizeAlternate pages from two PDFs (1A,1B,2A,2B…)
Remove Blank Pages
OptimizeAuto-detect and delete blank PDF pages
Add PDF Background
EditAdd a coloured or watermark background to pages
PDF Checksum
SecurityVerify a PDF with SHA-256 / SHA-1 / SHA-512
PDF Inspector
EditDetailed analysis of any PDF file
Adjust PDF Margins
EditAdd or expand white space around pages
Swap PDF Pages
OrganizeSwap any two pages in a PDF
Duplicate PDF Pages
OrganizeRepeat selected pages N times
Fill PDF Form
EditType into PDF form fields and download
Highlight PDF
EditAdd yellow highlights to any PDF region
Annotate PDF
EditAdd text notes & arrows on top of pages
Add PDF Border
EditAdd a decorative frame around every page
Split PDF by Size
OrganizeAuto-split PDF into chunks under N MB
Split by Bookmarks
OrganizeSplit a PDF at each outline / bookmark
Passport Photo Sheet
ConvertTile passport photos on a 4×6 print sheet
Invoice Generator
ConvertCreate professional PDF invoices in seconds
Extract Pages
OrganizePull selected pages into a new PDF
Insert PDF
OrganizeInsert another PDF at a specific page
Add Cover Page
OrganizePrepend a styled cover page to your PDF
Business Card Sheet
ConvertPrint 10 business cards on one A4 / Letter page
Address Label Sheet
ConvertPrint address labels (Avery 5160 / L7160)
Envelope Printer
ConvertPrint a single addressed envelope
Certificate Generator
ConvertBulk-create certificates from a name list
Smart Edit PDF
EditEdit PDF text in real time, like a Word document
PDF to CSV
ConvertPull tables out of a PDF as CSV
PDF to SVG
ConvertRender every page as a crisp SVG
SVG to PDF
ConvertCombine SVG files into one PDF
BMP to PDF
ConvertConvert Windows bitmap files to PDF
GIF to PDF
ConvertSave GIF images as PDF pages
PDF to RTF
ConvertExtract text as a Rich Text Format file
Draw on PDF
EditFreehand draw, sketch and whiteboard on a PDF
Image Stamp
EditStamp a logo or seal on every page
Apply Letterhead
EditOverlay a letterhead PDF on every page
Generate Table of Contents
OrganizeBuild a ToC page from your PDF outline
Scale Page Content
EditScale content up or down by percentage
Center on New Size
OrganizeRe-paper to A4/Letter and center the content
Split Every N Pages
OrganizeBreak a PDF into fixed-size N-page chunks
Keep First Page
OrganizeExtract just the first page (cover)
Keep Last Page
OrganizeExtract just the last page
Rotate Specific Pages
EditRotate individual pages independently
Auto-Trim Whitespace
OptimizeAuto-crop blank margins from every page
Anonymize PDF
SecurityStrip author, metadata and form data
Mail-Merge PDF
ConvertCSV + template → one personalised PDF per row
Truly private
Your files never get uploaded. Everything happens in your browser using WebAssembly.
Lightning fast
No server round-trips. Files are processed at the speed of your CPU, not your connection.
Free & open
No signup, no watermarks, no daily limits. Hosted on Cloudflare Pages with unlimited bandwidth.
How it works
No installation, no account, no server. Just open a tool, drop your file and download the result.
1. Open a tool
Pick any of the 94+ PDF utilities. They all open instantly in your browser tab without any plugin or extension.
2. Drop your file & adjust settings
Drag and drop your PDF (or image) onto the tool. Set options like page range, quality level or watermark text — then click the action button.
3. Download your result
Processing is instant because it runs on your own CPU. Your browser prompts you to save the file — nothing is sent anywhere.
Why choose a browser-based PDF tool?
Your documents stay private
Most popular online PDF converters work by uploading your file to a remote server, processing it there and sending back the result. That means a copy of your document — potentially containing sensitive contracts, tax returns or personal IDs — passes through a third-party infrastructure you cannot audit. PDF Modern eliminates that risk entirely: every operation executes locally in your browser tab using WebAssembly, so your data never leaves your machine.
No limits, no paywalls
Server-based services need to throttle usage to control costs — hence the daily limits, file-size caps and premium tiers. Because PDF Modern offloads all computation to your device, there is no server bill to recoup. Every tool is free, unlimited and requires no signup. You can merge a 500-page book and a 1 MB flyer in the same session without hitting any ceiling.
Works on any device, even offline
PDF Modern is a Progressive Web App (PWA). After your first visit, the core libraries are cached on your device. This means you can return to the site and process files even without an internet connection. It runs equally well on Windows, macOS, Linux, Android and iOS — anything with a modern web browser.
Instant processing speed
When you use a server-based tool you wait for the upload, the queue, the processing and the download. With PDF Modern the only bottleneck is your local CPU, which is typically much faster than a shared cloud VM. A 50-page PDF is split or merged in under a second on most modern laptops.
Frequently asked questions
Are the PDF tools really free?
Yes — 100% free, unlimited use, no account required and no watermarks. PDF Modern is a static site with no server costs to pass on.
Do my files get uploaded to a server?
No. Every tool runs entirely inside your web browser using WebAssembly. Your PDF files never leave your device. Nothing is transmitted, stored or logged.
Is there a file size limit?
There is no software-imposed limit. The practical ceiling is your device's available RAM. Most modern computers handle PDFs of several hundred megabytes without any issue.
Which browsers are supported?
All modern browsers are supported: Chrome, Edge, Firefox, Safari and Brave. We recommend keeping your browser up to date for the best WebAssembly performance.
Can I use these tools on mobile?
Yes. The site is fully responsive and works on Android and iOS. For large files you may get better performance on a desktop or laptop.
Are the tools GDPR-compliant?
Yes. Because no personal data or file content is ever uploaded, there is nothing to store, share or delete. See our Privacy Policy for the full details.
How do I report a bug or request a feature?
Email us at [email protected] or visit the Contact page. We read every message and typically reply within 1–2 business days.
Does PDF Modern work offline?
After your first visit the core libraries are cached by your browser. You can then use most tools without an active internet connection.