Tools
Every interactive tool has unique copy, examples, and limitations. Pages are not generated by swapping format names. Ads are not shown.
DeveloperJSON, YAML, CSV, XML, TOML, dotenv, Base64, JWT, hashes, and other local text tools. No account required.ImageConvert, resize, compress, and inspect images locally. EXIF and GPS stay on your device unless you choose to copy them.AI imageInspect PNG chunks, extract ComfyUI workflows, and strip generation metadata. Unknown fields stay labelled unknown.VideoInspect duration and resolution, and calculate bitrate, frame rate, and export starting points. No unrestricted transcode farm.FileCross-format file utilities that do not retain uploads. More file-type tools will land as they meet the quality gate.
Developer
JSON, YAML, CSV, XML, TOML, dotenv, Base64, JWT, hashes, and other local text tools. No account required.
developerJSON formatterPretty-print JSON locally with clear parse errors and a one-click copy.developerJSON minifierCollapse JSON to a single compact line without sending it anywhere.developerJSON validatorCheck whether text is valid JSON, with a useful error location.developerJSON repair helperRebuild almost-JSON into strict JSON, then read the warning before you trust it.developerJSON to YAMLTurn JSON into readable YAML without leaving your machine.developerYAML to JSONParse YAML into JSON without custom tags or server-side processing.developerJSON to CSVTurn a JSON array into CSV without dropping nested values on the floor.developerCSV to JSONParse real CSV into JSON without breaking on commas inside quotes.developerXML to JSONMap XML into JSON while keeping attributes and text nodes visible.developerJSON to XMLBuild XML from JSON when you already know the root element name.developerTOML to JSONTurn TOML config into JSON without uploading your secrets file.developerJSON to TOMLSerialise JSON config as TOML when the root is an object.developer.env to JSONParse a .env file into JSON without sending secrets to a server.developerJSON to .envWrite a .env file from a JSON object without guessing nested key names.developerBase64 encoder and decoderEncode or decode Base64 without uploading the payload.developerURL encoder and decoderApply or reverse percent-encoding without a round trip to a server.developerHTML entity encoder and decoderEscape or unescape HTML entities without rendering the input.developerJWT decoderRead a JWT’s JSON claims locally. This is not signature validation.developerUUID generatorCreate random UUID v4 values without a network call.developerHash generatorCompute common hashes locally. MD5 and SHA-1 are labelled as legacy.developerUNIX timestamp converterTranslate UNIX time and ISO-8601 without a timezone guessing game.developerCron expression explainerRead a cron expression in plain language before you schedule it.developerRegex testerTry a JavaScript regex locally with safe highlighting.developerMarkdown to HTMLTurn Markdown into HTML source without previewing untrusted markup.developerHTML to MarkdownFlatten HTML into Markdown without rendering the original markup.developerSQL formatterPretty-print SQL without sending the query to a database or a server.
Image
Convert, resize, compress, and inspect images locally. EXIF and GPS stay on your device unless you choose to copy them.
imageImage converterConvert images on-device, with honest limits for animation and AVIF support.imageImage resizerResize images on-device without a trip through a remote farm.imageImage compressorReduce image weight in the browser and see the new file size before you download.imageImage information viewerRead width, height, and file size without uploading the picture.imageEXIF viewerInspect EXIF and GPS locally, with tags treated as untrusted strings.imageImage metadata removerStrip location and camera metadata before you share a photo.imageImage colour palette extractorPull a handful of dominant colours from an image without uploading it.imageImage to Base64Turn an image into Base64 or a data URI without uploading it.imageBase64 to imageTurn a data URI or Base64 string back into an image file.imageFavicon generatorBuild favicon PNGs locally from a square source image.imageSocial image resizerExport named social sizes locally, with the pixel dimensions stated up front.imageImage aspect-ratio calculatorSimplify pixel dimensions to a ratio such as 16:9 or 4:3.
AI image
Inspect PNG chunks, extract ComfyUI workflows, and strip generation metadata. Unknown fields stay labelled unknown.
ai-imageAI-image metadata viewerSee whether an image still contains AI prompts — and say so only when it does.ai-imagePNG chunk inspectorSee every PNG chunk, including the ones that hide prompts.ai-imageComfyUI workflow extractorPull ComfyUI workflow JSON out of a PNG when the chunks are still there.ai-imageAI-image metadata removerStrip prompts and workflows from an image before you share it.ai-imageWorkflow JSON formatterCheck workflow JSON is parseable before you share or import it.ai-imageWorkflow JSON comparisonSee whether two workflow files are the same after key sorting.ai-imagePrompt cleanerTidy a prompt’s whitespace without sending it to a model.ai-imagePrompt to JSONTurn a comma-separated prompt into JSON tokens without a model.
Video
Inspect duration and resolution, and calculate bitrate, frame rate, and export starting points. No unrestricted transcode farm.
videoVideo file inspectorRead duration and resolution from a video without uploading it.videoVideo bitrate calculatorTurn file size and duration into an estimated bitrate, locally.videoVideo aspect-ratio calculatorGet 16:9 or 9:16 from pixel dimensions without a timeline app.videoFrame-rate calculatorWork out frame counts and fps locally, including 23.976 caveats.videoDuration and file-size calculatorEstimate how big a clip will be from duration and bitrate.videoSocial video export settingsUse researched starting points for social exports, with the re-encode caveat attached.