🛠️ 35+ Free Tools • No Registration Required
100% Client-Side — Files Never Leave Your Device

Process Files Privately — No Upload Required

Edit, compress, merge, redact, convert, scrub and analyze files entirely in your browser. Works offline. GDPR & HIPAA safe.

Get Started Free

Privacy First

Your files are processed on your device and are never uploaded to any server.

Blazing Fast

No waiting for uploads or downloads. Instant results right in your browser.

Security & Compliance

Redact PDFs, scrub PII, remove metadata and analyze logs — all offline.

All Tools

Merge PDFs

Combine multiple PDF files into one document instantly.

PDF Editor

Add text, highlights, annotations and whiteout to PDFs.

Compress PDF

Reduce PDF file size to a target KB without quality loss.

Split PDF

Extract pages or split a PDF into multiple files.

PDF Watermark

Add text watermarks to every page of a PDF.

Secure PDF

Password protect and encrypt PDF files locally.

PDF to Image

Convert PDF pages to JPG or PNG images.

PDF Converter

Convert PDF to Word, CSV, JPG or PNG.

New

PDF Redaction

Permanently black out sensitive text in PDFs and documents. Auto-detect PII, emails, SSNs. 100% offline.

Compress Image

Reduce image file size to a target KB without quality loss.

Image to PDF

Convert images to PDF instantly in your browser.

Resize Image

Change image dimensions and compress to target file size.

Crop Image

Cut and crop images to any aspect ratio.

Word Editor

Open, edit and download .docx files — no upload needed.

Excel Editor

View and edit .xlsx and .csv spreadsheets in browser.

Presentation Editor

Create and edit .pptx slideshows in your browser — no upload.

New

Invoice Generator

Create professional invoices with currency conversion and download as PDF. No account needed.

Hash Calculator

MD5, SHA-1, SHA-256, SHA-512 hashes instantly.

SHA256 Generator

Generate SHA-256 hashes for files or text instantly.

Unix Timestamp

Convert epoch timestamps to human-readable dates and back.

New

Metadata & EXIF Remover

Strip GPS, camera info, author data from images, PDFs and DOCX files privately.

New

PII Scrubber

Auto-detect and remove personally identifiable information before pasting into ChatGPT or any AI tool.

New

Log File Parser

Drag and drop server logs to detect SQLi, XSS, Log4Shell, brute force and extract IOCs. Incident response ready.

JSON Formatter

Format and validate JSON data with syntax highlighting.

JSON ⇄ YAML

Convert between JSON and YAML formats instantly.

JWT Decoder

Decode and verify JSON Web Tokens securely in browser.

Markdown Previewer

Live Markdown editor with GFM preview and export.

UUID Generator

Generate unique identifiers (UUID v1 & v4).

Password Generator

Create strong, secure passwords with entropy scoring.

Random Number Generator

Pick random numbers from any range with statistics.

Age Calculator

Calculate exact age and date differences from any date.

Base64 to Image

Decode Base64 strings to viewable images.

Image to Base64

Convert images to Base64 strings for embedding.

Hex ⇄ ASCII

Convert between hexadecimal and ASCII text.

Pomodoro Timer

Boost focus with timed work sessions and break reminders.

The Best 100% Client-Side Tool Suite — Free, Private & Secure

InBrowserTools is a privacy-first file processing suite that runs entirely in your browser. Unlike Smallpdf, ILovePDF or TinyWow, your files are never sent to any server. Every operation — PDF edit, image compression, document conversion, PDF redaction, metadata removal, PII scrubbing and log file analysis — happens on your own CPU using WebAssembly and browser-native APIs. It is a genuine zero-knowledge PDF editor and a GDPR-compliant, HIPAA-safe tool suite for individuals, law firms, healthcare providers and security teams.

The new PDF Redaction tool permanently blacks out sensitive text in PDFs with auto-detection of emails, phone numbers, SSNs and credit card numbers. The PII Scrubber detects and removes personally identifiable information from any text before you paste it into ChatGPT, Claude or other AI tools — with dummy data replacement and tokenization modes. The Metadata & EXIF Remover strips GPS coordinates, camera details, author names and creation dates from images, PDFs and DOCX files. The Log File Parser is a full incident response tool that detects SQLi, XSS, Log4Shell, brute force attacks and extracts IOCs — all without uploading sensitive company logs to a third-party service.

For document work, the new Invoice Generator creates professional PDF invoices with currency conversion, custom colour themes and signature upload — entirely in browser. Combined with the existing 30+ tools for PDF, image, data and developer tasks, InBrowserTools is the most comprehensive offline-capable browser-based tool suite available for free.

⚖️ Legal & HR Professionals

Password-protect contracts, watermark NDAs, redact sensitive names and account numbers from PDFs, and remove document metadata before sharing. A true HIPAA-safe PDF converter and no-server file editor — confidential client documents never leave your machine.

🔒 Security & IT Teams

Use the Log File Parser for incident response — detect SQL injection, XSS, Log4Shell and brute force attacks with MITRE ATT&CK mapping. Extract IOCs. Use the PII Scrubber to safely use AI tools with sensitive data. Export findings as CEF for SIEM ingestion.

🖥️ Developers & Data Teams

JSON formatter, JWT decoder, UUID generator, SHA256, MD5, hex-to-ASCII, Base64, YAML converter, Markdown previewer, Unix timestamp converter, and a secure password generator — all client-side. Scrub PII from payloads before sending to AI assistants.

📄 Business & Finance

Create professional invoices with currency conversion in the Invoice Generator. Edit DOCX, XLSX and PPTX files without uploading. Remove EXIF and author metadata from documents before sending to clients. Compress and merge PDFs for submissions.

Frequently Asked Questions

Yes — every tool is a genuine no-upload file processor. Your files are loaded into browser memory using FileReader, processed by JavaScript libraries (pdf-lib, PDF.js, mammoth.js, JSZip), and the result downloads directly. No file content, filename or metadata is ever transmitted. This includes the new PDF Redaction, PII Scrubber, Metadata Remover and Log Parser tools — none of them send any data to a server.
The PDF Redaction tool uses PDF.js to render your document on an HTML5 canvas and pdf-lib to burn permanent black rectangles over selected content. You can draw manually, use freehand brush, or enable Auto-Detect to automatically find emails, phone numbers, SSNs, credit cards, IP addresses, dates and URLs. Preview mode shows amber highlights before committing. Three redaction styles: black bar, red "CLASSIFIED" stamp and hash block. The redacted text is irretrievably removed from the downloaded PDF — it cannot be recovered by selecting, copying or inspecting the file.
The PII Scrubber is a text tool designed for use before pasting content into public AI tools like ChatGPT or Claude. It detects emails, phone numbers, SSNs, credit card numbers, dates, IP addresses, URLs, full names, addresses and ZIP codes. It offers four modes: remove entirely, redact with black blocks, replace with realistic dummy data (emails → fake@example.com, names → Alex Johnson), or tokenize ([EMAIL_1], [NAME_2]) so you can reverse-substitute after getting the AI response. A reversible PII map is shown and can be exported as CSV.
For images (JPG, PNG, WEBP): full EXIF data including GPS coordinates, camera make/model, lens info, ISO, aperture, shutter speed, date taken, artist, copyright and embedded thumbnails — removed by redrawing on an HTML5 canvas. For PDFs: Title, Author, Subject, Creator, Producer, Keywords, CreationDate, ModDate and XMP metadata stream — cleared using pdf-lib. For DOCX/XLSX/PPTX: author, last modified by, company, manager, revision number, creation/modification dates and total editing time — blanked in docProps/core.xml and docProps/app.xml via JSZip. For videos: MP4/MOV atom metadata zeroed in-place including encoder, GPS, purchase data and Apple ID fields.
The Log File Parser is an incident response tool that auto-detects 7 log formats (Apache, Nginx, Syslog, JSON, Log4j, Python, ISO timestamp) and runs 20 security pattern detectors including: SQL injection, NoSQL injection, XSS, path traversal/LFI, remote file inclusion, Log4Shell (CVE-2021-44228), command injection, SSRF, XXE, SSTI, reverse shells, webshell patterns, brute force, privilege escalation, sensitive file access, data exfiltration, cryptominer activity and CVE references — all mapped to MITRE ATT&CK IDs. It also extracts IOCs (IPs, domains, URLs, MD5/SHA1/SHA256 hashes, CVEs, emails), identifies top offender IPs, detects brute force (5+ auth failures from the same IP), generates a threat score, and exports findings as CEF (for SIEM import), CSV or JSON. Virtual scrolling handles files of any size — tested with 1 million line logs.
Because all processing happens in the browser with zero server contact, InBrowserTools is aligned with GDPR data minimisation (Article 5) and suitable as a HIPAA-safe tool for medical records and PHI. No personal data, file content or telemetry is collected. The PDF Redaction and Metadata Remover tools are particularly useful for GDPR Right to Erasure (Article 17) workflows — permanently removing personal data from documents before distribution.
InBrowserTools is the best secure alternative to Smallpdf and a private TinyWow alternative because it never uploads files. Smallpdf and ILovePDF process documents on their servers. InBrowserTools uses local browser processing via JavaScript, meaning files stay on your machine. It covers all the same tasks — merge, compress, split, convert, protect, watermark, edit — plus adds PDF redaction, metadata removal, PII scrubbing, log analysis and invoice generation that no other free browser tool offers.
Once a tool page is loaded, all JavaScript libraries are cached and most tools work without internet. This makes it practical for air-gapped corporate environments, restricted networks and travel. The Log File Parser, PII Scrubber, PDF Redaction and Metadata Remover are especially useful offline since they often involve sensitive files that should not be transmitted anywhere.
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