All PDF tools. Free, no upload required.
Edit, sign, merge, split, and stamp PDFs entirely in your browser. No signup, no per-document fee, no file ever leaves your device.
Edit & Sign
Drop your PDF, type into the fields, sign, download.
Open the PDF, draw or type your signature, drop it anywhere on the page, and download.
Drag across the text you want to mark, pick from yellow / green / pink / blue / orange, adjust opacity.
Drop a logo, stamp, photo, or screenshot onto any page.
Pages
Drop the PDFs you want to combine, drag the page thumbnails to reorder, click Download.
Type the page range you want — `1,3,5-7` extracts those exact pages — preview the result, download.
Click a page thumbnail, hit the rotate icon — that page now displays in landscape.
Click the page thumbnail you want gone, hit the delete icon, then download.
Type the page numbers you want, preview the result, download.
Force every page to A4, Letter, A3 — fit, fill, or stretch.
Auto-straighten tilted scans — sub-degree precision, in-browser.
Page tools
Type the watermark text, pick size / opacity / rotation / position, preview live on the canvas, download.
Pick a corner, choose a format like `Page {n} of {total}`, set the starting page, preview live, download.
Drag a black rectangle over any account number, signature, or name you don't want to share, then download.
URL · vCard · Wi-Fi · vector output, no upload.
Shrink 60–95% — picks DPI by preset, runs in your browser.
Remove the password from a protected PDF — auto-detects user vs owner.
Combine images into one PDF. Auto-detects format, drag to reorder.
Render every page as an image. DPI presets, page picker, zip bundle.
Encrypt with a password and restrict actions — printing, copying, editing.
Image, solid colour, or one-page PDF template — behind or overlay placement.
Coming with v1.1
Make scanned PDFs searchable (v1.1)
Convert PDF to editable .docx (v1.1)
Convert .docx to PDF (v1.1)
Trim margins on every page (v1.1)
Why PDFCatalyst?
- Files stay in your browser — verifiable in DevTools
- Faster than upload-based tools
- No signup, no email wall
- Works offline once loaded
Free PDF tools that respect your privacy
PDF tools are essential for modern workflows — editing contracts, converting formats, signing agreements, redacting sensitive numbers. Most online PDF tools require uploading your file, which means it passes through their TLS termination, RAM, and possibly a queue before they touch it. PDFCatalyst processes everything in your browser, so the bytes never leave your device. Whether you need to merge PDFs, split a long contract, compress before sharing, or convert between formats, the workflow runs without a single network round-trip — verify in DevTools' Network tab. Free for unlimited use; no signup, no card, no per-document watermark.