Free browser tools for files, images, code, and text.
PDF merge/split, image tools, JSON + regex helpers, lorem ipsum, color converters, Pomodoro timer — daily utilities that don't need a paid SaaS.
No ads · No signup · No paywall · Instant results · Always free
Hand-picked starters.
Merge, split, and convert PDFs.
The PDF utilities that used to require Adobe Pro — combine, split, and convert files entirely in the browser.
Resize, convert, and compress.
Aspect-ratio calculator, image compression, and format conversion — the file utilities you need before publishing.
Aspect Ratio
Drag width and height. The widget computes the simplified ratio and shows the closest common preset (16:9, 4:3, 1:1, 21:9).
Favicon Size Visualizer
Drag the pixel size — see which use case each dimension covers (tab, iOS, Android, app-store).
Color and icon prep.
Convert color codes, preview favicons at every size, and copy the values straight into your CSS.
Color Code Converter
Drag the R, G, B channels — the hex value, HSL coordinates, and closest CSS named color update live.
Favicon Generator
Generate every favicon size from 16 to 512px plus the HTML link tags, ready to drop into your site head.
16–512px+ link tagsJSON, regex, encoding, and time.
The dev utilities every workflow eventually needs — clean output, copy-friendly, no signup wall.
JSON Validity Counter
Paste JSON — the widget validates instantly and breaks down the structure by type (objects, arrays, scalars).
Regex Tester
Build and test regular expressions with live highlighting and capture-group inspection.
JS / PCREflags + groupsWriting, generating, and counting.
Live markdown preview, lorem ipsum placeholders, and the text + number utilities you reach for daily.
Markdown Editor
Write markdown with side-by-side preview, table support, and HTML export. Keyboard shortcuts included.
CommonMarktables + footnotesLorem Ipsum Generator
Generate paragraphs, sentences, or word lists of placeholder text — classic Latin or modern variants.
Configurableword / paragraph / listTime, testing, and templates.
Pomodoro timer, responsive-design tester, speed test, and the legal-template generators every freelancer needs.
Pomodoro Timer
Drag work and break minutes. The widget computes the cycle pattern and the equivalent full-day deep-work time.
Privacy Policy Generator
Generate a GDPR + CCPA-aware privacy policy for your site. Customizable cookie + tracking disclosures.
~3 mincopy-paste readyThe tools vocabulary, decoded.
Every definition links to the calculator that puts the term to work. Browse the full glossary →
ratio = (w ÷ gcd(w, h)) : (h ÷ gcd(w, h))Aspect-ratio reduction — divide both sides by the greatest common divisor: 1920×1080 ÷ 120 gives 16:9.KB = bytes / 1024 · MB = KB / 1024Binary file-size units — compressors, upload limits, and disk tools all count in powers of 1,024.Base64 size ≈ ⌈bytes / 3⌉ × 4Base64 encodes every 3 bytes as 4 characters, so encoded output runs about 33% larger than the original.Frequently asked questions
Are PDF / image files uploaded to a server?
No. Every file utility on this site runs entirely client-side — the PDF/image data never leaves your browser. That's why there's no upload limit, no signup, and no waiting for processing. The drawback: very large files may be slow on older devices since all the work happens locally.
Is the privacy-policy / terms-generator legally binding?
The generated templates cover the standard GDPR + CCPA disclosures and are a solid starting point. They are NOT a substitute for an attorney's review — especially if you collect sensitive data (health, financial, biometric), process EU residents' data at scale, or operate in a regulated industry. Use them as a draft, not a final document.
Why is "16:9" the right aspect ratio for YouTube / TikTok / etc.?
16:9 (1.78) is the standard widescreen ratio: YouTube horizontal, broadcast TV, most monitors. TikTok and Instagram Reels are 9:16 (1080×1920 vertical). Square posts are 1:1 (1080×1080). The Aspect Ratio widget shows the closest common preset for any width × height combination.
Is the JSON Formatter safe for sensitive data?
Yes — JSON Formatter runs entirely in the browser. No data is sent anywhere. Same goes for Regex Tester, Diff Checker, Base64 (which works in both directions), and CSV ↔ JSON. If you're pasting secrets / PII, you're safe.
Why does "Pomodoro" use 25/5?
Francesco Cirillo named the technique in the late 1980s after his tomato-shaped kitchen timer. The 25-minute work + 5-minute break ratio is the classic; many modern variants use 50/10 (deep work blocks) or 90/15 (one ultradian rhythm cycle). The widget lets you adjust the ratio and see the daily deep-work equivalent.
11 categories, one search box, zero signups. If it has a number, we calculate it.
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