All tools

Everything you need. Built for privacy. speed. offline. no uploads.

Chat with PDF
Ask questions & get summaries. Only text sent to AI.
AI
↗
Compress PDF
Three quality modes. Real size savings shown instantly.
Free
↗
Merge PDF
Drag to reorder. Merge unlimited files, zero size cap.
Free
↗
Redact Data
Auto-detect & blackout emails, IDs, PAN, Aadhaar.
New
↗
Split PDF
By range, every N pages, or hand-pick pages.
Free
↗
Sign PDF
Draw, type, or upload signature. Embed on any page locally.
Free
↗
OCR PDF
Tesseract.js, 100+ languages. Scanned docs become searchable.
Free
↗
PDF → Images
PNG, JPEG, WebP at 72–600 DPI. Per-page or ZIP.
Free
↗
Watermark PDF
Text or image, tiled or positioned. Live canvas preview.
Free
↗
Translate PDF
Translate into 50+ languages. File stays local.
New
↗
Rotate & Reorder
Visual drag-and-drop thumbnail page manager.
Free
↗
Fill PDF Forms
AcroForm field detection and local form filling.
Free
↗
Image Compressor
Compress JPG/PNG/WebP to 20KB, 50KB, 100KB.
Free
↗
Image Resizer
Exact pixels, %, passport & social presets.
Free
↗
Images → PDF
Combine JPG/PNG/WebP. Set page size & margins.
Free
↗
Protect & Unlock
Add or remove password protection locally.
Free
↗
Page Numbers
9 positions, Roman numerals, prefix/suffix, preview.
Free
↗
Crop PDF
Visual drag handles. Apply to one or all pages.
Free
↗
Compare PDFs
Side-by-side pixel diff. Highlights every change.
Free
↗
Metadata Editor
View, edit, or strip all hidden metadata.
Free
↗
Extract Images
Pull original embedded images at full resolution.
Free
↗
PDF → Markdown
Clean Markdown output for devs and AI workflows.
Free
↗
Bates Numbering
Legal-grade sequential numbering across document sets.
Free
↗
PDF → Word
Layout-preserving .docx with full formatting.
Free
↗
PDF → Excel
Auto-detect tables, export multi-sheet .xlsx.
Free
↗
Annotate PDF
Highlights, drawings, stamps, comments baked in.
Free
↗
JPG to PDF
Turn JPG photos into a PDF. One per page, A4 or original size.
New
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PNG to PDF
Convert PNG images to PDF with transparency flattened cleanly.
New
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Word to PDF
Convert .docx to PDF locally. Text, tables & images preserved.
New
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Excel to PDF
Each sheet becomes a clean PDF table. XLSX, XLS & CSV.
New
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Unlock PDF
Remove a PDF password you know. No more retyping it.
New
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Delete Pages
Click page thumbnails to remove them. Original quality kept.
New
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Passport Photo
35×45mm, visa & exam sizes with exact-KB output.
New
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QR Generator
Permanent QR codes for links, WiFi & UPI. No tracking.
New
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PDF Reader
Open any PDF instantly with zoom. Works offline.
New
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PDF to PowerPoint
Each page becomes a PPTX slide. Opens in PowerPoint & Slides.
New
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HEIC to PDF
iPhone photos to PDF or JPG. Decoded locally via WASM.
New
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Flatten PDF
Lock forms, signatures & notes into the page permanently.
New
↗
Form Creator
Click to add fillable text fields, checkboxes & dropdowns.
New
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Header & Footer
Stamp names, dates & notices on every page. {page} tokens.
New
↗
Repair PDF
Recover data from corrupted or malformed PDFs.
Soon
Zero uploads · Zero server · Zero compromise

The PDF suite
that never sees
your files

25+ professional PDF tools processed entirely inside your browser. Merge, OCR, sign, redact — without a single byte leaving your device.

0
Live tools
0
Server uploads
∞
File size limit
0
OCR languages
WASM-powered
Web Worker isolation
Offline-first PWA
GDPR & HIPAA friendly
No account required
Zero server contact

Your files stay on
your machine

Every competitor uploads your contracts and medical records to someone else's server. We run everything in-browser — even our own servers have never seen your data.

⚡
WebAssembly engine
PDF-lib, Tesseract compiled to WASM. Near-native speed, zero network.
🧵
Web Worker isolation
Heavy work runs in background threads. UI stays silky on 2 GB files.
📶
Offline-first PWA
Install as app. Works on planes, air-gapped machines, courtrooms.
What actually happens
📂
You pick a file
Browser File API — stays in RAM
🧵
Dispatched to Web Worker
UI thread never blocked
⚙️
WASM processes your file
pdf-lib / Tesseract / Ghostscript
⬇️
Result streamed back
Zero-copy ArrayBuffer transfer
🚫No network request was made. Your file never left this device.
Why PDFZero

What legacy players
can't replicate

01
In-browser OCR, 100+ languages
Tesseract.js in a Web Worker — no cloud API, no per-page billing, no data leaving your device.
AI-powered
02
True local signatures
Draw, type, or upload. Embedded with pdf-lib without touching any external service.
Always free
03
No file size cap. Ever.
iLovePDF: 100 MB cap. Smallpdf: 5 files/day. Us: your RAM is the limit — typically 4–16 GB.
Always free
04
Web Worker architecture
All WASM work runs in background threads. The UI never freezes — even during 500-page OCR.
Always free
05
AI redaction of PII
Auto-detect and permanently blackout emails, Aadhaar, passports. For legal, HR, healthcare.
Live now
06
Offline as a feature
Install as a PWA. Works in flight, in a hospital air-gap, in a courtroom — zero connectivity needed.
Always free

Built for enterprises that can't afford data leaks

Deploy PDFZero on your private intranet. Air-gapped, self-hosted, white-labeled. Client-side processing means near-zero infrastructure overhead.

🔒 Air-gapped 🏷️ White-label 📋 Audit logging 🔑 SSO / SAML ♾ Unlimited users
Contact sales →
FAQ

Frequently asked questions

Is PDFZero really free?

Yes. All 25+ PDF tools are 100% free with no limits, no account, and no watermarks. PDFZero is supported by unobtrusive ads, not by charging you or selling your data.

Are my files uploaded to a server?

No. Every PDFZero tool runs entirely inside your browser using JavaScript. Your documents are processed on your own device and are never uploaded, stored, or seen by us — which also makes the tools faster than upload-based converters.

Do I need to install software or create an account?

No installation and no signup. PDFZero works instantly in any modern browser on Windows, Mac, Linux, Android, and iOS. You can even use it offline once the page has loaded.

What can I do with PDFZero?

You can compress, merge, split, rotate, crop, protect, redact, watermark, sign, and OCR PDFs, plus convert PDF to Word, Excel, images, and Markdown — and convert images to PDF. There are 25+ tools in total, all free.

Is there a file size limit?

There is no fixed upload limit because nothing is uploaded. The only practical limit is your device's available memory, so even large PDFs work fine on most computers.

Can I use PDFZero in my language?

Yes. Use the 🌐 language picker in the top navigation to translate the entire interface into 120+ languages, including Hindi, Spanish, Arabic, Chinese, French, and many more.