Tools
File, image and document tools. Every conversion happens on your machine.
- Combine ImagesStack screenshots or lay out a contact sheet.
- Compress Image to a SizeUnder 200 KB, under 1 MB — whatever the form demands.
- Rotate and Flip ImageBaked into the pixels, not left in a flag.
- Square Image CropperFor a profile picture that is not squashed.
- Favicon GeneratorEvery size a browser asks for, from one image.
- Image CompressorSmaller file, same dimensions.
- Image ConverterJPG, PNG and WebP, converted on your own machine.
- PNG to JPG ConverterShrink oversized PNG screenshots into shareable JPGs.
- JPG to PNG ConverterMove a JPG into a lossless format before you edit it.
- WebP to JPG ConverterTurn a WebP that nothing will open into a JPG that everything will.
- JPG to WebP ConverterCut roughly a third off your image weight without visible loss.
- WebP to PNG ConverterOpen a WebP anywhere — and keep its transparency intact.
- PNG to WebP ConverterShrink a PNG dramatically without giving up its transparency.
- HEIC to JPG ConverterTurn iPhone photos into a format everything can open.
- Image ResizerShrink photos to the size they will actually be displayed at.
- Flatten PDF FormBake the answers in so nobody can change them.
- Split PDF Into PagesEvery page as its own file, in one go.
- Add Watermark to PDFMark a draft as a draft, on every page.
- Resize PDF PagesOne paper size throughout, without stretching anything.
- Crop PDFTrim each edge by eye, in percentages that suit any page size.
- PDF Pages Per SheetTwo, four or sixteen up — a handout, or a contact sheet.
- Reorder PDF PagesMove pages without losing the ones you did not mention.
- Remove PDF MetadataStrip the author, software and dates a PDF carries.
- Add Page Numbers to PDFNumbers stamped into the file, not into a viewer.
- Merge PDFJoin several PDFs into one document, in the order you choose.
- Split PDFPull a page or a range out of a PDF into a new document.
- Delete PDF PagesDrop the pages you do not want and keep everything else.
- Rotate PDFTurn sideways scans upright and save the rotation permanently.
- JPG to PDF ConverterTurn photos and screenshots into one tidy PDF, one image per page.
- JSON to TypeScriptTurn a sample payload into interfaces, with optional keys detected.
- PX to REM ConverterConvert pixel values to rem, or back, against any root size.
- XML FormatterIndent it, or strip it back down.
- JSON to CSV ConverterFor getting an API response into a spreadsheet.
- Colour Shades GeneratorTints and shades, blended in OKLab so the steps look even.
- SQL FormatterA readable shape for a query you inherited.
- CSS MinifierComments, whitespace and the last semicolon.
- HTML MinifierStrip comments and collapse whitespace, safely.
- Binary to Text ConverterBoth directions, UTF-8 aware.
- Luhn Checksum ValidatorThe check digit behind card and IMEI numbers.
- Markdown to HTML ConverterHeadings, lists, links, code and quotes — escaped properly.
- Time Zone ConverterOne instant, shown in every zone you care about.
- YAML to JSON ConverterFor the common subset — config files, not the whole spec.
- Roman Numeral ConverterBoth directions, with malformed numerals named.
- Subnet CalculatorNetwork, broadcast, usable range and host count.
- Data Size ConverterEvery unit at once, with the 1000 and 1024 split made explicit.
- Unix Timestamp ConverterEpoch seconds to a readable date, and back again.
- Regex TesterSee every match and capture group, safely.
- Text DiffLine-by-line differences, computed in your browser.
- Cron Expression ExplainerWhat a schedule actually means, in a sentence.
- Query String ParserBreak a URL into readable parameters, decoded.
- Number Base ConverterConvert between bases, one number per line.
- JSON FormatterIndent, validate and sort JSON, with errors that say where.
- Base64 Encoder & DecoderEncode or decode Base64, including the URL-safe variant.
- URL Encoder & DecoderPercent-encode a value, or read back one that has been mangled.
- UUID GeneratorCryptographically random v4 UUIDs, as many as you need.
- SHA-256 Hash GeneratorHash text to SHA-256 or CRC-32, computed in your browser.
- CSV to JSON ConverterConvert CSV to JSON, handling quoted commas properly.
- Password GeneratorCryptographically random passwords, generated on your device.
- JWT DecoderRead a token’s header and claims, entirely in your browser.
- HTML Encoder & DecoderEscape text for HTML, or decode entities back to characters.
- Color ConverterConvert between colour notations, with contrast ratios.
- Readability CheckerFlesch, Flesch-Kincaid and Gunning Fog, plus the sentences to fix.
- Password Strength CheckerEntropy in bits, and the patterns that undo it.
- Morse Code TranslatorBoth directions, with the timing rules explained.
- Email and URL ExtractorPull structured values out of unstructured text.
- Line Break RemoverFor text pasted out of a PDF or an email.
- Find and ReplaceAcross a whole document, with a count of what changed.
- Random Number GeneratorCryptographically random, and genuinely unbiased.
- Keyword Density CheckerSingle words and phrases, ranked by how often they appear.
- GPA CalculatorWeighted by credit hours, one course per line.
- Word CounterWords, characters, sentences and reading time as you type.
- Case ConverterSentence, title, camel, snake and kebab case, done properly.
- Slug GeneratorTurn a title into a clean, safe URL slug.
- Lorem Ipsum GeneratorPlaceholder text in the amount you actually need.
- Sort & Deduplicate LinesClean up a list: sort it, drop repeats, trim the whitespace.