PDF Metrix
Local PDF Suite

Every tool you need to master PDFs in seconds

25 powerful PDF tools. 100% local processing. Edit, convert, redact, sign, compress, and protect your files in milliseconds—completely offline, secure, with zero data retention and no uploads required.

25
Tools, Full Suite
<0.7s
Avg Process Time
PRIVACY
Zero Data Logging
The Bench

PDF Metrix 25-Tool Mega Suite

Popular

Merge PDF

Merge multiple PDFs into one document.

Use Merge Multi-mode

Split PDF

Extract or split specific page ranges.

Use Split

Crop PDF

Trim page margins and custom borders.

Crop Pages

Delete Pages

Select and remove individual pages from your PDF.

Delete Pages

Organize PDF

Reorder, delete and manage document pages.

Organize Pages Save 80%

Compress PDF

Reduce file size with high quality.

Compress Now Form creator

Edit PDF

Add text, shapes and form fields.

Edit PDF Signature

Sign PDF

Place hand signatures and custom stamps.

Sign PDF Mosaic layer

Watermark PDF

Add custom text or image stamps.

Stamp PDF

Page Numbers

Insert styled page numbers automatically.

Add Numbers

Rotate PDF

Rotate page orientation to any angle.

Rotate Pages

Extract Pages

Extract every page as individual PDFs, packed in a ZIP file.

Extract Pages

Protect PDF

Encrypt PDF files with strong password.

Add Password

Unlock PDF

Remove password security and restrict permissions.

Unlock File Dual viewer

Compare PDFs

Compare revision differences in side-by-side view.

Compare PDFs

Word to PDF

Convert Microsoft Word DOCX to PDF.

Convert Word

Excel to PDF

Convert Microsoft Excel sheets to PDF.

Convert Excel

PowerPoint to PDF

Convert Microsoft PowerPoint slides to PDF.

Convert PPT

PDF to Word

Convert PDF to editable Word document.

PDF to Word Data

PDF to Excel

Convert PDF to structured Excel spreadsheet.

PDF to Excel

PDF to PowerPoint

Convert PDF to editable PowerPoint presentation.

PDF to PPT

PDF to JPG / PNG

Convert PDF pages to JPG images.

Extract Images

JPG / PNG to PDF

Convert JPG and PNG images to PDF.

Convert Images

PDF to Text

Extract document text for simple reuse.

Extract Text

HTML to PDF

Convert HTML pages or web URLs.

Convert HTML
WASM 64-BIT

Local WebAssembly Engine

100% client-side RAM processing with zero server delay and instant execution.

Run Locally
AES-256

Zero Server Retention

Your files stay 100% private and never leave your local device memory.

See Security
HIDPI VECTOR

Ultra HD 4K Quality

Crisp vector text rendering & zero page degradation across all exports.

View Quality
MOBILE QR

25 Power Tools & Mobile

Full-featured PDF suite with mobile touch signature drawing and QR pairing.

Explore Suite

Why In-Browser Local Processing Matters

Traditional online PDF tools upload your sensitive documents to distant third-party servers, posing severe confidentiality risks for legal contracts, financial audits, and personal records. PDF Metrix revolutionizes document workflow by executing 100% of operations locally inside your browser’s isolated memory space. By eliminating server uploads completely, your documents remain strictly under your control at all times.

Powered by 64-Bit WebAssembly Engine

Our client-side processing core is compiled directly from high-performance C++ binaries into WebAssembly (WASM). This allows PDF Metrix to split, merge, compress, and render complex multi-gigabyte document streams at lightning speed under 0.7 seconds with zero latency.

Ultra HD 4K Vector Rendering Precision

Never compromise on visual clarity. PDF Metrix utilizes HiDPI vector rendering algorithms that maintain crisp font geometry and high-resolution graphic integrity across all exports, signatures, watermarks, and page manipulations.

Seamless Mobile Sync & Signature Touch

Draw smooth handwritten e-signatures on your mobile smartphone screen and instantly pair them with your desktop workstation using our secure local QR pairing system. No software installation or cloud account setup required.

Complete 25-Tool PDF Engineering Suite

Organize & Edit

Merge multiple PDFs into a single file, split large documents by custom page ranges, rotate page orientations, crop margins, delete unwanted pages, and reorder document structure with interactive drag-and-drop page thumbnails.

Security & Signatures

Protect confidential files with 256-bit AES encryption passwords, remove security restrictions from authorized files, add custom text or image watermarks, insert dynamic page numbers, and draw legal digital signatures.

Ultra-Fast Converters

Convert Word (DOCX), Excel (XLSX), PowerPoint (PPTX), JPG/PNG images, and HTML web pages directly to PDF format, or extract raw PDF text and high-resolution images back to editable office documents.

PDF Metrix Master Documentation

Technical Specifications & User Knowledge Base

Discover how local-first WebAssembly binaries, 64-bit client memory processing, and vector engines execute all 25 PDF tools 100% offline in your browser without cloud uploads.

Architecture Comparison Matrix

Feature & Metric PDF Metrix (In-Browser WASM) Traditional Cloud Converters
File Security & Upload Privacy 100% In-Browser RAM (Zero Uploads) Uploaded to Remote Third-Party Cloud Servers
Processing Speed Instant Sub-0.7s Local Execution Slow (Network Upload & Server Queue Dependent)
Offline Accessibility 100% Offline PWA (Works Without Internet) Requires Active High-Speed Internet
Daily Usage Limits Unlimited Free Processing Strict Daily Caps (e.g. 2 Files Max Free)
E-Signature Audit Compliance Embedded SHA-256 Audit Trail Certificates Basic Image Overlay Stamps
Interactive Live Playground

Try Before You Upload: In-Browser WASM Sandbox

Test our vector matrix rotation, canvas signature drawing, and local 64-bit WebAssembly speed benchmarks right now in your browser.

Live Page Reordering & Rotation Sandbox

Click the action controls below to simulate real-time vector page thumbnail manipulation:

PAGE 1
PAGE 2
PAGE 3

Instant WebAssembly Speed Benchmark

Test local client processing speed for a 10MB multi-page document:

Sample Document: 10.4 MB Ready for Benchmark
Execution Time: 0.00s Throughput: -- MB/s
Privacy Inspector

Real-Time Zero-Network Traffic Monitor

Verify our 100% in-browser RAM execution model with live client security diagnostic counters.

HTTP Upload Requests
0
100% Zero Remote Calls
Cloud Data Retained
0.00 KB
Strict Local RAM Sandbox
Encryption Engine
AES-256
Client 256-Bit Cipher
Signature Audit Hash
SHA-256
ESIGN & eIDAS Compliant
SHA-256 Cryptographic Audit Hash Sample: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
3-Step Instant Workflow

Interactive Use-Case Workflow Selector

Select your professional role to view tailored PDF tools and automated execution steps:

1

Import Document

Drag & drop course notes or multi-page textbooks directly into local device memory with instant parsing.

2

Compress & Organize

Compress PDF under 100KB for assignment upload portals and reorder chapter pages seamlessly.

3

Instant Export

Download crisp, optimized vector PDF file ready for submission with zero daily limits.

Verified User Ratings

Loved by 100,000+ Professionals & Students

See what real users say about PDF Metrix speed, privacy, and zero daily upload limits:

★★★★★

"PDF Metrix is a lifesaver for court filings. Knowing my sensitive legal documents never touch a third-party cloud server gives me 100% peace of mind."

- Eleanor Vance
Senior Corporate Legal Counsel
★★★★★

"I compress 50MB research papers down under 100KB instantly right inside my web browser on airplane flights without WiFi. Unbelievably fast WASM speed!"

- Marcus Chen
PhD Researcher & University Fellow
★★★★★

"No monthly subscriptions, no 2-file daily caps, and clean e-signature audit certificates for our entire accounting department. Highly recommended!"

- Sarah Jenkins
Lead Financial Controller
WebAssembly 64-Bit WASM GDPR Compliant Zero-Log ESIGN & eIDAS Ready 100% Offline PWA Certified

Frequently Asked Questions & Technical FAQ

Q: Are my uploaded PDF files safe on PDF Metrix?

A: Yes! PDF Metrix features a 100% in-browser processing architecture. Your files are processed entirely inside your local device memory (RAM) via WebAssembly. Files are never uploaded, saved, or logged on any cloud server.

Q: Can I use PDF Metrix offline without an Internet connection?

A: Absolutely. PDF Metrix is a Progressive Web App (PWA) equipped with a background Service Worker (sw.js). Once loaded, all 25 PDF tools run 100% offline, allowing you to merge, split, edit, and compress documents on airplanes or remote locations.

Q: Is there any daily file processing limit or paywall?

A: No. Unlike traditional cloud PDF services that enforce strict 2-file daily limits or require monthly subscriptions, PDF Metrix allows unlimited PDF merging, splitting, compression, and editing for free.

Q: Are electronic signatures created on PDF Metrix legally binding?

A: Yes. PDF Metrix e-signatures comply with the US ESIGN Act and EU eIDAS regulation standards. Each signed file includes a SHA-256 cryptographic audit trail certificate verifying document hash integrity and UTC execution timestamps.

Q: What desktop and mobile web browsers are supported?

A: PDF Metrix supports all modern browsers with WebAssembly support, including Google Chrome, Mozilla Firefox, Apple Safari, Microsoft Edge, Brave, and Opera across Windows, macOS, Linux, iOS, and Android.

Q: How does PDF Metrix compress PDF file size without reducing document text quality?

A: PDF Metrix uses WebAssembly stream optimization to resample embedded high-DPI image assets, compress PDF object streams (Cross-Reference Tables), and prune duplicate font subsets. This preserves crisp vector text while reducing total file size by up to 90%.

Q: What is the maximum PDF file size supported for local browser processing?

A: Because PDF Metrix operates directly in your browser using 64-bit client WebAssembly memory allocation, it can comfortably handle large PDF documents up to 500MB and over 1,000 pages without crashing or sending data to cloud servers.

Q: How does PDF Metrix handle document conversion from office formats like Word, Excel, and PowerPoint?

A: Office document conversions (DOCX, XLSX, PPTX to PDF) utilize local client-side vector parsing and rendering engines inside your browser. Text layout matrices, font tables, and embedded images are parsed directly into vector PDF streams locally.

Q: Does PDF Metrix store any metadata, usage analytics, or document content?

A: No. PDF Metrix adheres to a strict Zero-Knowledge privacy model. All document operations, text extractions, page splits, and watermark bakes happen exclusively within your browser's private memory space. No document bytes or metadata ever leave your device.

Q: Can I embed PDF Metrix tools into my own website or blog?

A: Yes! PDF Metrix provides an Embed Widget feature allowing webmasters and developers to embed any of our 25 interactive PDF tools directly into their websites via iframe integration snippets.