Full-featured PDF editor that runs entirely in your browser — merge, split, fill forms, rotate pages, add/remove passwords, and edit metadata. Your files never leave your device — 100% private.
Full-featured API client that runs in your browser — make HTTP requests, edit headers/body/params, save collections, generate code snippets (cURL/Fetch/Axios). Your API keys never touch a server — everything runs locally.
Convert 100+ Markdown files into beautifully styled PDFs or static HTML with custom CSS, auto-generated table of contents, and corporate templates. Everything runs locally in your browser — nothing is uploaded.
Scan thousands of log files or codebase files for regex patterns (IPs, API keys, URLs) and extract or replace them. Visual builder for non-coders with live preview. Everything runs locally in your browser — nothing is uploaded.
Convert MKV video files to MP4 format directly in your browser. 100% free, private — your files never leave your device.
Convert MOV video files to MP4 format directly in your browser. 100% free, private — your files never leave your device.
PDF Workflow Builder lets you full-featured PDF editor that runs entirely in your browser — merge, split, fill forms, rotate pages, add/remove passwords, and edit metadata. Your files never leave your device — 100% private.. It works on any device with a modern web browser.
Full-featured PDF editor that runs entirely in your browser — merge, split, fill forms, rotate pages, add/remove passwords, and edit metadata. Your files never leave your device — 100% private. It runs entirely in your browser — no software installation or data uploads required.
Upload a file from your device. Drag and drop or use the file picker to select your document.
Yes. After the initial page load, PDF Workflow Builder runs entirely on your device with no internet connection needed. All processing is done locally.
Tools cover JavaScript, CSS, HTML, SQL, Python, JSON, XML, CSV, and more. Check individual tool descriptions for specifics.
No. All code processing — formatting, minification, conversion, hashing — runs locally in your browser.
Yes. Since processing is local, performance depends on your device. Most operations handle large files without issue.
Yes. SQL uses sql-formatter, JSON uses native JSON.parse, and other formatters follow widely adopted formatting rules.
Yes. All developer tools work fully offline after the initial page load.
Time Converter
Convert between time units including seconds, minutes, hours, days, weeks, months, and years with precise decimal results. Everything runs locally in your browser — nothing is uploaded.
Random Port Generator
Generate random TCP/UDP port numbers from well-known, registered, or dynamic ranges. Useful for network testing, Docker port mapping, and firewall configuration.
Chmod Calculator
Convert between numeric (755) and symbolic (u=rwx,g=rx,o=rx) chmod permission formats. See detailed breakdown for owner, group, and others.
Docker Run to Compose Converter
Convert docker run commands to docker-compose.yml format. Supports ports, volumes, environment variables, networks, restart policies, and container names.
Email Normalizer
Normalize email addresses by removing dots (Gmail), stripping +tags, and lowercasing. Process multiple emails at once for deduplication and cleaning.
Diff Checker
Compares two input texts side-by-side, highlighting inserted, deleted, and changed lines with distinct background colors. Everything runs locally in your browser — nothing is uploaded.