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Guides and tutorials for our free online tools.
2026-07-03
Learn how to reduce image file size to 100KB or less using free online tools. No signup, no upload.
2026-07-03
Complete guide to generating QR codes for WiFi, URLs, email, phone, and SMS. Free, no watermark.
2026-07-03
Step-by-step guide to combining multiple PDF files into one. No upload, no signup, no watermark.
2026-07-03
Learn what makes a password strong and how to generate cryptographically secure passwords.
2026-07-03
A curated list of free developer tools: JSON formatter, JWT decoder, regex tester, hash generator, and more.
2026-07-04
How to extract text from images using free OCR. 10+ languages. No upload.
2026-07-04
Complete guide to color formats and WCAG contrast checker.
2026-07-04
How to decode JWTs, check expiry, and debug authentication.
2026-07-04
All three gradient types with 12 presets and PNG download.
2026-07-04
7 categories, 208 dedicated pages. Length, weight, temperature.
2026-07-04
Compare texts with LCS algorithm. Ignore case/whitespace.
2026-07-04
Reduce file size safely. JS minifier preserves regex and division.
2026-07-04
Learn about entropy, passphrases, and password managers.
2026-07-04
4 PDF tools that run in your browser. No upload, no signup.
2026-07-04
Scientific calculator, number base, hash, UUID, and more.
2026-07-05
Encode and decode Base64 strings, images, and data URIs. RFC 4648 compliant.
2026-07-05
Generate UUIDs for database keys, distributed systems, API tokens. v4 vs v7.
2026-07-05
Write and preview Markdown with GFM, tables, syntax highlighting.
2026-07-05
Scan QR codes with phone or laptop camera. Privacy-first, no upload.
2026-07-05
Resize images for social media, email, web. Aspect ratio lock, batch mode.
2026-07-05
Generate placeholder text by paragraphs, sentences, or words.
2026-07-05
Crop photos online with aspect ratio presets. Runs in your browser.
2026-07-05
Calculate exact age and days until next birthday. Leap-year safe.
2026-07-05
Boost focus with the 25-minute work + 5-minute break cycle.
2026-07-05
Generate URL slugs from titles. Lowercase, hyphen-separated, batch mode.