Utilities Web Apps

A giant toolbox of free file utilities that run in your browser — PDF merge and split, image conversion and background removal, video trimming, OCR, and hundreds of small converters with no signup and no watermarks.

Suite of browser tools for audio, video and PDF: cut, merge and convert files, record from webcam or microphone, all with a clean interface and generous free limits.

Completely free PDF toolbox from a German company: merge, split, compress, convert, sign, OCR and edit PDFs with no file-size caps, watermarks or account requirements.

Popular PDF workspace covering merge, split, compress, convert to and from Office formats, sign and watermark, with batch processing. Free tier handles everyday documents; premium lifts size limits.

High-quality file converter supporting 200+ formats across documents, images, audio, video and ebooks, with fine-grained conversion options and an API. Free tier includes daily conversion minutes.

Send large files as a simple link — upload, add an email or copy the URL, done. Free transfers up to 2 GB with expiring links; paid tiers add size, storage and password options.

AirDrop for every platform: devices on the same network discover each other in the browser and exchange files or messages directly, with optional paired connections across networks. Open source and free.

Analyze suspicious files, URLs, domains and IPs with 70+ antivirus engines and scanners simultaneously, then explore relationships between threats. Free for standard lookups, and widely relied on by security teams, IT admins and cautious downloaders.

Check whether your email address or passwords have appeared in known data breaches, and subscribe to alerts for future leaks. Free public service run by security researcher Troy Hunt.

Open-source password manager with end-to-end encryption: unlimited passwords across unlimited devices on the free tier, plus passkeys, secure notes and TOTP support. Web vault, extensions and apps.

Netflix's dead-simple speed test: open the page and your download speed appears — no ads, no upsells. Expand for upload, latency and loaded-connection measurements. Free.

Visual time zone converter: stack cities as parallel timelines and slide across hours to find meeting slots that work for everyone. Free for a handful of locations.

Machine translation renowned for natural, nuanced output across 30+ languages, with document translation, formality control and a glossary. Free tier translates generous amounts of text.

Free QR code generator with logo embedding, custom colors and shapes, and high-resolution vector export (SVG, PDF, EPS) — no account, no expiring codes, free for commercial use.

Over 3000 purpose-built calculators — mortgage amortization, concrete volume, drug dosage, orbital mechanics — each explaining its formula and assumptions, written and reviewed by subject-matter experts. Free with no account.

Interactive weather visualization: animated wind, rain, waves and pressure layers on a world map, comparing multiple forecast models (ECMWF, GFS, ICON). Free core features; loved by pilots, sailors and surfers.