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For developers

For developers

Utilities that never see your secrets.

Format, decode and test with tools that run entirely in your browser, and edit code with a live HTML preview in a folder on your own computer.

Open the free workspace

In your free workspace

Code editor

Edit code with syntax highlighting for 100+ languages and preview HTML, CSS and JavaScript live. Files are saved in a folder on your computer. Free, no sign-up.

Notes & wiki

Write notes, meeting minutes and wikis with nested pages, slash commands, checklists, tables, toggles and templates. Saved as Markdown files on your computer.

Whiteboard

An infinite whiteboard with shapes, sticky notes, arrows, templates and freehand drawing. Saves .excalidraw files on your computer and exports PNG, SVG and PDF.

To-do list

A fast to-do list with Today and Upcoming views, lists, due dates, priorities and natural-language quick add. Free, private and saved on your computer.

PDF tools

PDF to TextExtract all the text from a PDF.

Image tools

PNG to WebPConvert PNG images to lightweight WebP.JPG to WebPConvert JPG photos to smaller WebP files.Screenshot BeautifierMake screenshots look polished for sharing.Image to Base64Turn an image into a data URL.Favicon GeneratorMake favicon.ico and app icons from one image.SVG to PNGRender SVG files or code to PNG.

Writing & text tools

Case ConverterUpper, lower, title, sentence and more.Find and ReplaceReplace words across a whole text.Remove Duplicate LinesDedupe and sort lists of lines.Lorem Ipsum GeneratorPlaceholder paragraphs for mockups.Markdown EditorWrite Markdown with a live preview.Slug GeneratorClean URL slugs from any title.

Productivity tools

Password GeneratorStrong passwords and passphrases.

Converters

Text to BinaryText to binary, hex and back.Number Base ConverterBinary, octal, decimal and hex.CSV to ExcelTurn CSV files into an Excel workbook.Excel to CSVExport Excel sheets as CSV files.

Audio & video tools

Screen RecorderRecord your screen with audio and webcam.Video to GIFTurn a video clip into a GIF.

Design tools

Color PickerPick colors and convert HEX, RGB, HSL and more.Color Palette GeneratorColor schemes from a base color.Contrast CheckerWCAG contrast ratio with fixes.Gradient GeneratorBuild gradients and copy the CSS.Box Shadow GeneratorLayered CSS shadows with live preview.Image Color PickerPick colors from any image.PX to REMPixels to rem and back.

Developer tools

JSON FormatterBeautify, validate, minify and repair JSON.Base64 Encode / DecodeText and files to Base64 and back.URL Encode / DecodeEncode, decode and inspect URLs.JWT DecoderRead the header, payload and expiry of a JWT.UUID GeneratorUUID v4 and v7, in bulk.Hash GeneratorMD5 and SHA checksums of text or files.Regex TesterLive regex matching, groups and replace.Diff CheckerCompare two texts and highlight changes.Timestamp ConverterEpoch time to dates and back.Cron ParserExplain a cron schedule and list next runs.SQL FormatterBeautify SQL for any database.YAML ⇄ JSONConvert YAML and JSON both ways.CSV ⇄ JSONSpreadsheets to JSON and back.HTML EntitiesEscape and unescape HTML entities.

Example: debugging a failing API call

How the tools and the free workspace fit together. Everything stays on your computer.

Format the response with the JSON Formatter and find the error line.
Decode the access token with the JWT Decoder to check expiry and audience.
Test the parsing pattern in the Regex Tester.
Keep notes and snippets in the code editor, saved as files in your folder.
Sketch the fix on an Architecture whiteboard and turn its boxes into tasks.

Free for developers, forever.

openWorkstand has no paid plan. Everything on this page is free to use.

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