Now with an AI assistant, pipelines and Office conversion

PDF tools that respect
your privacy

The free online PDF editor with over 70 tools to edit, compress, merge, sign, redact, convert, transcribe and protect PDFs entirely in your browser. With an AI assistant, semantic search and peer to peer sharing built in. No uploads, no servers, no data collection.

Start Using PDF Cloak

0 bytes

uploaded to any server

70+

tools in your browser

100%

local processing

Free

no sign up required

New in PDF Cloak

An assistant, automation
and a full office engine

AI Assistant

New

Chat with your library. Mention documents with @, say things like merge these two, redact all emails and protect the result, and watch it drive every tool for you. Bring your own model endpoint, keys stay in your browser.

Semantic Search

New

Press ⌘K and search all your documents by meaning, not just exact words. A local AI model indexes everything on your device and jumps you to the exact page. Nothing is uploaded, ever.

Pipelines

New

Chain tools into reusable workflows. Watermark, then compress, then protect, saved once and run on any set of documents in one click, or by asking the AI.

Office to PDF

New

Convert Word, Excel and PowerPoint files to PDF with a full office engine compiled to WebAssembly. Documents render faithfully without ever leaving your device.

Private by design

Privacy is not a feature.
It's the architecture.

PDF Cloak is built from the ground up to process everything on your device. There is no server to hack, no database to breach and no data to sell.

No File Uploads

Your files never leave your device. Everything runs in your browser using WebAssembly.

Zero Data Collection

No analytics, no tracking, no cookies. We don't know who you are, and we like it that way.

Fully Local Processing

Every operation happens on your machine. No server, no middleman, nothing to breach.

Completely Free

No hidden fees, no freemium traps, no sign ups. Free to use, always.

Built for speed

Blazing fast.
No network required.

Traditional PDF tools waste time uploading and downloading files. PDF Cloak uses WebAssembly to process everything at close to native speed, directly in your browser.

WebAssembly Powered

Core PDF operations run on compiled WebAssembly at close to native speed, right in your browser.

Instant Processing

No upload and download cycle. Files are processed in milliseconds, not minutes.

Unlimited Local Storage

Documents persist in your browser's private file system. No cloud quotas, no storage limits.

Large PDF Support

Handles documents hundreds of pages long without heavy memory use thanks to streaming page rendering.

Stack Multiple Edits

Apply annotations, redactions, signatures and watermarks to the same document in a single session.

Keyboard Navigation

Undo, redo, delete and deselect with shortcuts. Built for power users from day one.

75 tools and counting

Everything you need.
Nothing you don't.

A complete PDF toolkit running locally in your browser via WebAssembly, with feature parity against the big server based suites.

Pipelines

Chain tools into saved workflows with per-step conditions

Automation Rules

Auto-run pipelines the moment matching PDFs are imported

Invoice Maker

GST tax invoices with CGST/SGST/IGST, HSN codes and amounts in words

Rent Receipts

Monthly HRA-ready receipts with PAN validation and stamp box

Semantic Search

Find passages by meaning across every document, with page jump

Compress

Reduce file size without losing quality

Split

By ranges, every N pages, chapters, file size or QR dividers

Extract Pages

Keep only a chosen subset of pages as a new document

Merge

Combine multiple PDFs into one document

Compare

Visual and text diff, synced reading view and a PDF diff report

OCR

Make scanned documents searchable in many languages

Office to PDF

Word, Excel and PowerPoint converted entirely in your browser

Text and Web to PDF

Markdown, HTML, EPUB, email, live URLs and text rendered to clean pages

Insert Image

Place images or text stamps anywhere with drag, resize and rotate

PDF to Data

CSV, Excel, Markdown, XML, EPUB or a pixel accurate web page

CSV to PDF

Turn spreadsheets and data files into formatted PDF tables

PDF to Office

Turn PDFs into editable Word files or PowerPoint slides

PDF/A Archive

Convert documents to the long term archival standard

Auto Redact

Find emails, phone numbers and IDs, then black them out for good

Privacy Scanner

Checksum verified PII risk report with one click redaction

Find & Replace

Swap text across every page in one pass

Bates Numbers

Sequential legal numbering across all pages

Headers & Footers

Left, center and right slots with page, date and filename tokens

Insert Pages

Add blank, lined or grid pages anywhere in the document

Collate

Interleave front and back scans or reverse the page order

Scan Cleanup

Straighten, trim and whiten scanned pages

Form Builder

Place text fields, checkboxes, dropdowns and radio groups on any PDF

Read Aloud

Listen to any document with voices on your device

Present

Show a PDF fullscreen, one page at a time

Comic Archive

Convert CBZ comics to PDF and PDFs to CBZ

Rotate

Rotate pages to any orientation

Remove Pages

Delete unwanted pages from your PDF

Remove Blank Pages

Auto detect empty pages and clean up scans in one click

Reorder Pages

Drag and drop to rearrange page order

Crop

Drag a box over a live preview to trim every page

Resize

Change page size to A4, Letter and more, or scale by factor

Print Layouts

N up handouts, booklet imposition and poster tiling

Password Protect

Encrypt your PDF with a secure password

Unlock

Remove password from a protected PDF

Permissions

Restrict printing, copying and editing with an owner password

Redact

Permanently remove sensitive content

Sign

Draw, type or apply certificate based digital signatures

Inspect and Verify

Document info, embedded scripts and signature validation

Repair

Rebuild damaged documents and recover from corruption

Overlay

Layer letterheads, stamps or forms from another PDF

Bookmarks

Edit the table of contents and split by chapters

Edit Metadata

Set title, author, subject and keywords

Attachments

Embed files inside a PDF and extract them back out

Extract Images

Pull every embedded image out at original quality

Page Effects

Dark mode, sepia and high contrast looks, or fine tune by hand

Photo Split

Separate individual photos from batch scanned pages

Camera Scan

Photograph documents straight into a PDF

Auto Rename

Name files from their title or first heading

Single Page

Stack every page into one long scrollable page

Textbook Split

Split scanned book spreads into individual pages

Duplicate Pages

Copy pages after each page or append to the end

Watermark

Text or image watermarks with precise positioning

Edit PDF

Highlight, underline, draw and add shapes with undo and redo

Edit Text

True content editing — rewrite paragraphs with real reflow, move or delete images

Fill Forms

Text fields, checkboxes, radio buttons and dropdowns

Form Data

Export filled form values as JSON, CSV or FDF, or fill from a file

Flatten

Bake annotations and form fields into static content

Strip Annotations

Remove all comments, highlights and markup at once

Image to PDF

Turn JPEG, PNG, WEBP, SVG or TIFF images into a PDF

PDF to Image

Export pages as PNG or JPEG at up to 600 DPI archival quality

PDF to Text

Extract text with OCR fallback, export as txt or md

Page Numbers

Sequential numbering with custom position and format

Sanitize

Strip hidden metadata like author and timestamps

File Fingerprint

SHA 256, SHA 1 and MD5 hashes with paste to verify

Create PDF

Write documents from scratch with rich text, images and page breaks

Audio to PDF

Transcribe recordings or your microphone to text, fully on device

PDF to Handwriting

Rewrite documents in handwriting, in place or on notebook paper

Handwriting to Text

Digitize handwritten pages into editable typed documents

P2P Share

Send files browser to browser with chat and a live whiteboard

Bundle to ZIP

Package any set of documents into a single archive

Missing something you need?

Request a feature
Enterprise
Available Now

Host it on
your infrastructure

Deploy PDF Cloak behind your firewall. Your documents never leave your network. Perfect for legal, healthcare, finance and government teams handling sensitive data.

  • Single Docker image, deploys in minutes on any Linux server or private cloud
  • Works fully offline, even air gapped
  • GDPR, HIPAA and SOC 2 ready with tamper evident audit logs
  • White label with your branding and domain
  • Simple offline license keys for teams up to 100 users
  • Priority support for deployment and integration
Contact Us

Private AI

Point the assistant at your own LLM. Summarize, extract and query without data leaving your network.

Bulk Conversions

Convert Word, PowerPoint, Excel and HTML files to PDF at scale with native LibreOffice on your own hardware.

OCR and Smart Redaction

Server side OCR plus pattern redaction for SSNs, emails or contract codes across thousands of documents, with signed reports.

Automation Pipelines

Watched folders, schedules and batch pipelines from input to OCR to redaction to watermark to output. Fully deterministic.

REST API and Webhooks

Chain PDF operations via API endpoints, triggered from CRMs, ERPs or any external system. HMAC signed webhooks.

SSO and Access Control

OIDC single sign on, SCIM directory sync, role based teams, live collaboration and tamper evident audit logs.

FAQ

Frequently asked questions

Everything about editing PDFs privately in your browser.

Is PDF Cloak a free PDF editor?

Yes. Every tool — editing text and images, merging, splitting, compressing, signing, redacting, converting and 60+ more — is completely free, with no sign-up, watermarks, file-size tricks or daily limits.

Is it safe to edit PDFs online with PDF Cloak?

Safer than any upload-based service: your files never leave your device. All processing runs locally in your browser via WebAssembly — nothing is uploaded to a server, so there is nothing for anyone to store, scan or leak.

How do I edit a PDF without uploading it?

Open pdfcloak.com/app, drop a PDF in, and edit. The PDF engine runs inside your browser, so text edits, image moves, signatures and redactions all happen on your machine. It even works offline once loaded.

Can I edit existing text and images in a PDF?

Yes. PDF Cloak does true content editing: rewrite paragraphs with automatic text reflow, and move, resize or delete embedded images. Changes are written into the PDF's content streams — not pasted on top as overlays.

What PDF tools are included?

Over 70: merge, split, compress, rotate, reorder and remove pages, sign and certify, redact, encrypt/unlock, watermark, OCR, fill and build forms, PDF to Word/Excel/PowerPoint/images, Office to PDF, scan cleanup, compare, an AI assistant, automation pipelines and more.

How is PDF Cloak different from iLovePDF, Smallpdf or Adobe Acrobat?

Those services upload your documents to their servers for processing. PDF Cloak runs the entire toolkit in your browser — zero uploads, zero accounts, zero tracking — while matching them on features, and it's free.

Does PDF Cloak work offline?

Yes. It installs as a Progressive Web App, and because processing is local, the tools keep working without an internet connection.

Can AI help me edit my PDFs?

Yes. The built-in AI assistant can redact private data, merge and reorganize documents, fill forms, run multi-step pipelines and answer questions about your files — using a model endpoint you control, so documents still never leave your device.

Ready to work with PDFs
without compromising privacy?

No sign up. No downloads. Just open the app and go.

Open PDF Cloak