UsefulShelf · Local-first Online Toolkit

Common tools, Ready to Use

No registration or installation. Search and directly enter tools. Most JSON, image, and text tasks are done in the browser.

JSON Formatter Workbench Generate QR Code Compress Image Timestamp conversion

Free, no sign-up

Ready when you are

Local-first processing

Online tools clearly labeled

Most tasks run in browser; online tools will be marked on the tool page

Common entries

Common tools

Start with common tasks: input, upload, or convert directly after opening.

Browse all 54 tools

JSON Formatter WorkbenchFormat, validate, query, compare, and convert JSON data

Generate QR CodeGenerate, detect and export brand QR code

Compress ImageCompress JPG, PNG, WebP images

Timestamp conversionConvert between timestamp and datetime

AI imagesGenerate images from a prompt or edit a reference image

AI videoCreate a short video from your prompt

Parse QR CodeUpload QR code image to parse content

Color pickerChoose color and convert HEX, RGB, HSL

Base64 ConvertText/Image/File Base64 encode and decode

Code FormatterBeautify JS, TS, CSS, HTML, JSON code

Image WatermarkAdd text watermark to image

Mermaid to PNG/SVGConvert Mermaid diagrams to SVG/PNG images

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Continue exploring

Regex testTest and debug regular expressions URL EncodeURL Encode/Decode Converter Markdown PreviewPreview Markdown and copy HTML UUID GeneratorBatch generate UUID v4 identifiers Currency ExchangeConvert currencies using reference rates Word CountCount words, characters, lines, and reading time

Tool Categories

Image Tools5 tools Document Tools4 tools Conversion Tool3 tools Developer Tools15 tools Design tools3 tools Life tools9 tools Productivity Tools10 tools Data tools2 tools Site Owner Tools3 tools

54Useful toolsReady when you are

LocalPrefer localOnline tools clearly labeled

No installation requiredReady to UseUse directly in browser

15Developer ToolsContinuously filling in