Free PDF Tools
PDF is the universal format for contracts, invoices, reports, and forms — but editing PDFs usually means expensive desktop software or shady online services that store your files. Every tool here runs entirely in your browser: your documents never leave your device, there's no account to create, and everything is free.
Merge multiple PDFs into one, compress file size before emailing, split out individual pages, rotate pages that scanned sideways, add watermarks or page numbers, convert to and from images, and more. All 14 tools below work offline once the page loads.
CSV to PDF
Drop a CSV and get a beautifully formatted PDF table in seconds.
PDF Merge
Combine multiple PDFs into one file. Drag to reorder pages.
PDF Compress
Shrink any PDF's file size with three quality presets.
PDF Split
Extract pages or split a PDF into smaller files instantly.
PDF Rotate
Rotate all or selected pages of a PDF to any angle.
PDF to JPG
Convert each PDF page into a high-quality JPG image.
Image to PDF
Turn JPG, PNG, and WebP images into a single PDF.
Excel to PDF
Convert Excel spreadsheets to well-formatted PDF documents.
Lock PDF
Add password protection to any PDF with AES encryption.
Unlock PDF
Remove password protection from PDFs you own.
PDF to Markdown
Extract a text-based PDF into clean Markdown — auto-detects headings, lists and bold.
PDF Watermark
Add text or image watermarks to any PDF — custom opacity, position and angle.
PDF Page Numbers
Add customisable page numbers to any PDF — position, font, start offset.
PDF Delete Pages
Remove one or more pages from a PDF instantly.
PDF to Text
Extract all readable text from a PDF — preserves paragraph breaks.
Frequently Asked Questions
Are my PDF files uploaded to a server? expand_more
No. Every PDF tool on Butter Tools runs entirely in your browser using JavaScript. Your files are never sent to any server, so your documents remain completely private.
How many PDFs can I merge at once? expand_more
There is no hard limit. You can merge as many PDF files as your browser can handle in memory. Most users successfully merge 20–50 files at a time.
Will PDF compression reduce quality? expand_more
Our PDF Compress tool offers three quality presets — low, medium, and high — so you control the tradeoff between file size and visual quality.
Is there a file size limit? expand_more
Because processing happens in your browser, the practical limit is your device's available RAM. Files up to a few hundred megabytes work well on modern devices.