All tools
99 tools — Converters, generators and calculators that run entirely inside your browser. Nothing is uploaded, nothing is stored, and none of it needs an account.
- Image ConverterConvert PNG, JPG, WebP, AVIF, SVG, BMP and ICO in your browser — batch convert, rotate, flip, make favicons. Nothing is uploaded.
- Image Resizer & CompressorResize images to exact pixels or a percentage and compress them, with a live before-and-after size comparison.
- Video TrimmerCut a piece out of an MP4 without re-encoding it — the clip keeps the original quality and is ready in about a second. Nothing is uploaded.
- Batch Image ProcessorDrop in hundreds of images, resize, convert, watermark and rename them all at once, and get them back as one ZIP. Nothing is uploaded.
- Image CropperCrop images to any area or a fixed aspect ratio, with a draggable selection and live pixel readout.
- EXIF Viewer & RemoverSee the camera, the date and the GPS location hidden in a photo, then save a copy with all of it removed. Nothing is uploaded.
- Aspect Ratio CalculatorFind an image or video's aspect ratio, resize without distortion, and fit it into any box — with the real panel ratios, so 3440×1440 says 21:9.
- Audio TrimmerCut a clip out of any audio file, add fade-in and fade-out, and export a clean WAV — decoded and rendered entirely in your browser.
- Screen RecorderRecord your screen, a window or a tab — with audio if you want — straight to a video file. Runs entirely in the browser; nothing is uploaded.
- Image AnnotatorMark up a screenshot: arrows, boxes, text, highlights — and blur the parts nobody else should read. Exports PNG, all in your browser.
- Favicon GeneratorOne image in, every favicon out: a real multi-size .ico plus the PNG sizes modern browsers and phones ask for. Built in your browser.
- Image Color PickerClick any pixel of an image to get its HEX, RGB and HSL — and see the picture's dominant palette extracted automatically.
- Barcode Generator (Code 128)Code 128 barcodes from any text or number — the symbology on courier labels and warehouse bins — rendered sharp as SVG and PNG, generated in your tab.
- SVG OptimizerStrip editor metadata, comments and dead precision from SVG files — a safe text-level pass that never touches geometry, with honest before/after bytes.
- PDF StudioSee every page of every PDF you open, drag them into order, rotate, delete, split and watermark, then export. Nothing is uploaded.
- Merge PDF FilesMerge PDFs and images into one PDF, extract or reorder pages, split into separate files, rotate scans. JPG to PDF works offline too.
- CSV to JSON ConverterConvert CSV or TSV to JSON or NDJSON and JSON back to Excel-ready CSV — quoting, commas and type detection handled correctly.
- Base64 Encoder & DecoderEncode and decode Base64 text, and turn any file into a Base64 data URI for embedding.
- Word & Character CounterLive word, character, sentence and paragraph counts, with reading time, keyword density, and whether the text fits a post, a search title or one text message.
- Sort & Dedupe LinesSort, dedupe, shuffle, trim and number lines — natural sort puts file2 before file10 — or compare two lists.
- Lorem Ipsum GeneratorPlaceholder text by paragraphs, sentences or exact word count — starting with the classic line everyone recognizes, shaped like real prose.
- Markdown EditorWrite markdown with a live preview — headings, lists, tables, code — then copy the HTML or download a standalone page. Pasted HTML stays text.
- Text Diff CheckerCompare two texts line by line with changed words highlighted inside each line — git's own algorithm, entirely in your browser.
- Text Case ConverterConvert text between sentence case, title case, camelCase, snake_case, kebab-case and more.
- Number to WordsWrite any amount out in words — Azerbaijani, Russian or English, with correct Russian grammar — the way contracts and invoices demand.
- Morse Code TranslatorText to Morse and back, with playback. Azerbaijani and Cyrillic letters transliterate first, so ə arrives as a dot, not as silence.
- Slug GeneratorTurn any title into a clean URL slug. Azerbaijani and Russian transliterate properly — ə, ğ, ş and Cyrillic become real letters, not blanks.
- Markdown Table GeneratorPaste cells from Excel or Google Sheets and get a Markdown table with padded columns and alignment — the part of Markdown nobody enjoys typing by hand.
- Unicode InspectorSee what is really inside a string: every code point with its UTF-8 bytes, invisible characters and Cyrillic lookalikes named — why the string breaks, answered.
- TransliteratorRussian Cyrillic to practical Latin and Azerbaijani letters to plain ASCII — for filenames, slugs, forms and every system that still chokes on ə.
- Diagram & Flowchart MakerDraw flowcharts and diagrams, connect the boxes with arrows that route themselves, and let it arrange the whole thing. Exports SVG. Nothing is uploaded.
- Password GeneratorGenerate strong random passwords using your browser's cryptographic RNG, with a live strength estimate.
- HTML Entity EncoderEncode text for HTML or decode entities back — the five markup breakers, named Latin-1 and symbol sets, numeric references up to emoji. Decodes exactly once.
- Regex TesterTest regular expressions with live highlighting, groups and replace preview — JavaScript's own engine, with a kill switch for catastrophic patterns.
- Cron Expression ParserDecode a cron schedule into plain fields and its next ten run times, local and UTC — with the crontab(5) day OR-rule done right.
- JWT DecoderDecode a JWT's header and claims, see expiry with live relative times, and check HS256/384/512 signatures against a secret — fully offline.
- Color Palette GeneratorFive-color palettes from any base color and a harmony rule — complementary, triadic, analogous and more — with CSS variable and JSON export.
- Color ConverterConvert colors between HEX, RGB, HSL, HWB, OKLCH and CMYK, check WCAG contrast with pass/fail verdicts, and build a ten-step lightness scale.
- Number Base ConverterConvert between binary, octal, decimal, hex and any base up to 36 — exact at any size, with a two's-complement view of the same bits signed and unsigned.
- Unix Timestamp ConverterConvert Unix timestamps to readable dates and back — seconds, milliseconds, micro- and nanoseconds detected automatically, with UTC, local time and batch mode.
- Hash GeneratorCompute SHA-256, SHA-1, SHA-384, SHA-512, MD5 and CRC32 for text or files, and check the result against a published checksum.
- UUID GeneratorGenerate random v4 or time-ordered v7 UUIDs in bulk, and read any UUID back to see its version and creation time.
- URL Encoder & DecoderPercent-encode and decode URLs, strip tracking parameters out of a shared link, and break any URL into its parts.
- JSON Formatter & ValidatorFormat, minify and validate JSON with precise error locations, plus a collapsible tree view.
- Text EncryptorEncrypt any text with a passphrase — AES-256-GCM in your browser, nothing sent anywhere. Paste the result back to decrypt it.
- JSON to TypeScriptPaste JSON, get clean TypeScript interfaces: nested objects named, array types unioned, identical shapes deduplicated, hostile keys quoted.
- CHMOD CalculatorUnix permissions three ways at once — checkboxes, octal and rwx string — each edit updating the other two. 755 explained, not memorised.
- SQL FormatterFormat and beautify SQL: keywords uppercased, clauses on their own lines, select lists broken at commas — strings and comments untouched, byte for byte.
- CSS Minifier & BeautifierMinify CSS for production or expand a compressed sheet back into readable rules — with honest before/after byte counts, all in your tab.
- String Escape / UnescapeEscape and unescape strings for JSON, HTML, URL, Base64, SQL and regex — both directions where a real inverse exists, one honest tool instead of six tabs.
- YAML to JSON ConverterConvert YAML configs to JSON in your tab — nested maps, lists, typed scalars and comments handled; anchors and block scalars refused by name, never mangled.
- Color Contrast CheckerWCAG contrast for any two colors — the exact spec formula, AA and AAA verdicts for normal and large text, and the nearest shade that passes when yours fails.
- Password Strength CheckerEntropy, named weaknesses and honest crack times for two real scenarios — a rate-limited login and an offline GPU rig. Checked in your tab; nothing is ever sent.
- Loan Payment CalculatorCalculate monthly payment, total interest and payoff date, with a full amortisation schedule.
- VAT CalculatorAdd VAT to a price or take it back off. Removing it is a division, not a subtraction — this shows both answers and the gap.
- Compound Interest CalculatorProject savings growth with regular contributions, any compounding frequency, and a year-by-year table.
- IBAN ValidatorCheck an IBAN's checksum and structure against the official registry, and see which bank and country it belongs to.
- Currency ConverterConvert between 50 currencies at the mid-market rate, rounded to each currency's real decimals, with the rate's publication date always on screen.
- Invoice GeneratorFill in the parties and the lines, get a clean PDF invoice — totals computed in integer cents, VAT per your rate, nothing sent to any server.
- Discount CalculatorSale price and savings — forwards, backwards from the tag price, and stacked discounts that multiply the way shops actually apply them.
- ROI CalculatorReturn on investment with honest annualisation — the geometric rate, not gain divided by years — plus doubling time by the exact formula and the rule of 72.
- Tip CalculatorTip, total and the per-person share when the bill splits — with a round-the-total option that adjusts the tip honestly and shows the percentage it became.
- AZ Salary CalculatorAzerbaijani net salary from gross — or gross from net — with income tax, DSMF, unemployment and medical insurance itemised for both sector regimes.
- Random Number GeneratorRandom numbers in any range from the browser's cryptographic generator, modulo bias removed — one number, a list, or a raffle draw without repeats.
- Percentage CalculatorSolve every common percentage question — percent of, percent change, and what percent X is of Y.
- Unit ConverterConvert length, weight, temperature, volume, area, speed, fuel economy and eight more categories between metric and imperial.
- QR Code GeneratorCreate static QR codes for links, WiFi, contacts, email, SMS or a map location. Free forever, works offline, no tracking or expiry.
- Fuel Cost CalculatorLitres per 100 km from a fill-up, and what any trip will cost at today's price — the two numbers every driver actually wants.
- Roman Numerals ConverterNumbers to Roman numerals and back, 1 to 3999 — strict about the canonical forms, so IIII is refused rather than taught.
- Random Name PickerPick a winner or shuffle a list with crypto-grade randomness and an unbiased draw — paste names, draw one or several, in your tab where nobody can rig it.
- CAD Drawing BoardDraw plans to scale in the browser: lines, arcs and dimensions on a very large canvas, with snapping, layers and DXF export. Nothing is uploaded.
- Stair Stringer CalculatorCalculate rise, run, stringer length and tread count from your total floor height. Checks results against building code limits.
- Concrete Slab CalculatorWork out how many cubic yards or metres of concrete a slab needs, plus bag counts and a waste allowance.
- Tile & Flooring CalculatorHow many tiles a room needs, and how many boxes to actually buy — with wastage applied the way a tiler does it.
- Roof Pitch CalculatorConvert roof pitch between rise-per-12, degrees and percent, then get rafter length and the true roof surface area.
- Paint CalculatorHow much paint a room needs and how many cans to buy — openings subtracted first, coats and coverage from the tin, rounded only at the till.
- Brick & Block CalculatorHow many bricks or blocks a wall needs, plus the mortar volume — counted by the course module with the joint included, the way a mason quotes.
- Laminate Flooring CalculatorHow many packs of laminate a floor needs — waste applied before rounding, packs rounded once, spare planks reported for future repairs.
- Wallpaper CalculatorHow many rolls a room takes — drops per roll at your ceiling, the pattern repeat included, which is where every hand estimate goes wrong.
- Plaster CalculatorPlaster and putty in bags: area × thickness × the bag's own kg/m²/mm figure, waste before rounding, rounded once at the till.
- Rebar Weight CalculatorRebar mass from diameter and length by the estimator's d²/162 with exact GOST 5781 table masses — kilograms, metres per tonne and 12 m bars to buy.
- Drywall CalculatorSheets, profiles, screws, tape and putty for a wall or ceiling from its area — Knauf consumption figures, waste applied before rounding into whole sheets.
- IP Subnet CalculatorCIDR to everything: network, broadcast, usable range, host count, mask and wildcard in dots and binary — plus the tightest prefix for a host count.
- What Is My IPYour public IP address, network location and connection details — fetched once from Cloudflare's trace endpoint, shown plainly, logged nowhere.
- DNS LookupA, AAAA, MX, TXT, CNAME, NS and more for any domain — queried over encrypted DNS (DoH), with TTLs shown the way an operator reads them.
- User Agent ParserPaste any user-agent string — or inspect your own — and get browser, version, engine, OS and device type, decoded by rules, not by a tracking database.
- BMI CalculatorBody mass index on the WHO adult scale, metric or imperial, with the normal-range weight for your height and the scale's limits stated plainly.
- Calorie Calculator (BMR & TDEE)Your basal metabolism by Mifflin–St Jeor and your daily calories by activity level, with honest ±500 kcal bands for losing or gaining.
- Ideal Weight CalculatorIdeal body weight by Devine, Robinson, Miller and Hamwi — the formulas medicine actually cites — plus the healthy-BMI weight band for your height.
- Running Pace CalculatorPace, finish time or distance — enter any two and get the third, with splits for 5K, 10K, half and the exact 42.195 km marathon.
- Body Fat CalculatorBody-fat percentage by the US Navy tape-measure method, with fat and lean mass split out and the ACE category bands — no calipers, no scan, no upload.
- Due Date CalculatorPregnancy due date by Naegele's rule from the last period or conception, with gestational age in weeks and days and the trimester map.
- Heart Rate Zone CalculatorFive training zones from your age — by Tanaka, not the fossil 220 formula — and by Karvonen when you know your resting heart rate.
- Sleep CalculatorWhen to go to bed for a given alarm — or when to wake for a given bedtime — on whole 90-minute sleep cycles, counting the minutes falling asleep takes.
- Date CalculatorCount days between two dates, add or subtract time, and work out exact age in years, months and days.
- Time Zone ConverterConvert times between cities with the browser's IANA time-zone database — DST applied automatically, day changes flagged, every world clock in one table.
- Timer & StopwatchA countdown timer that understands 5m, 1:30 or 90 — with a clear alarm — and a stopwatch with laps. Keeps counting in a background tab.
- Age CalculatorExact age in years, months and days — calendar-aware, leap-day honest — with total days lived, the weekday you were born, and the countdown to your next birthday.
- Working Days CalculatorBusiness days between two dates — or the date N working days out — with your own holiday list and weekend pattern, because calendars differ by country.