23 tools · Free · In your browser
Free tools for JSON,
text & files.
Format JSON, convert CSV, decode Base64 and work with text or model files. Free browser tools; your files and text stay on your device.
23 of 23 tools
Format & convertJSON FormatterFormat, validate and minify JSON without rounding large numbers. Search a tree, copy paths or complete values, and find syntax errors locally.Format & convertCSV to JSONConvert CSV to JSON while keeping IDs and leading zeros as strings. Supports quoted fields, multiline cells and custom delimiters. Copy or download locally.Format & convertJSON to CSVConvert a flat JSON object array to CSV without rounding large IDs. Choose columns and delimiters, protect spreadsheet formulas and download locally.Format & convertBase64 Encoder & DecoderDecode Base64 and Base64url into UTF-8 text, including Unicode and optional padding. Encode, copy or download text locally in your browser.Format & convertURL Encoder & DecoderEncode and decode URL components or complete URLs locally.Format & convertSQL FormatterFormat SQL queries for SQL, PostgreSQL, MySQL or SQLite locally.Format & convertXML FormatterFormat XML with syntax error feedback and preserve mixed text content.Format & convertHTML FormatterFormat HTML source locally without running scripts or loading its resources.Write & compareText DeduplicatorRemove duplicate text lines locally. Keep original order, compare case or whitespace, and copy or download the result.Write & compareText Diff CheckerCompare two texts and highlight added and removed lines locally.Write & compareMarkdown EditorWrite Markdown, preview it safely and export Markdown or sanitized HTML.Write & compareRegex TesterTest JavaScript regular expressions and inspect matches and capture groups.Time & scheduleTimestamp ConverterConvert Unix seconds or milliseconds to dates, or ISO dates to timestamps.Time & scheduleCron GeneratorBuild a five-field cron expression and preview its next ten runs in a time zone.IDs & securityUUID GeneratorGenerate cryptographically random UUID v4 identifiers locally.IDs & securityPassword GeneratorGenerate random passwords with your choice of length and character groups.IDs & securityJWT DecoderInspect a JWT header, payload and expiry locally without sharing the token.DesignImage WorkbenchGenerate images at exact sizes, resize or crop PNG, JPEG and WebP, convert images to Base64, and export multiple sizes locally in your browser.DesignWebP to PNG ConverterConvert static WebP images to PNG locally. Keep image dimensions and transparency, preview each result, and download individual PNGs or a batch ZIP.DesignColor Picker & ConverterPick a color or convert between HEX, RGB and HSL locally.DesignFavicon GeneratorCreate PNG icons and a multi-size ICO favicon from a local image.Inspect modelsGGUF InspectorRead GGUF model information and metadata locally in your browser. No file upload.Inspect modelsSafetensors InspectorExplore Safetensors tensor names, shapes, data types and metadata locally in your browser. No file upload.
Find the right tool for your data
Working with an API response? Format and inspect JSON while preserving large numbers. For spreadsheet exports, convert CSV into JSON with IDs and leading zeros kept as strings. For encoded text, decode Base64 or Base64url into readable UTF-8 text.