Free online tools that run entirely in your browser.

Format, validate, and inspect JSON locally in the browser.

Use it for API payloads, config snippets, nested examples, and schema drafts without uploading content by default.

Convert text and small payloads between plain text and Base64.

A basic utility definition for safe encoding checks, JWT segment inspection, and clipboard-friendly transformations.

Translate Unix timestamps, ISO strings, and local dates.

Designed for event timestamps, date inputs, time zone checks, and product copy that needs precise dates.

Encode query strings and decode URL-safe text.

A simple definition for request debugging, redirect checks, campaign links, and API query parameter cleanup.

Switch text between title case, sentence case, slug case, and constant case.

Useful for headings, filenames, labels, docs, content snippets, and structured naming tasks.

Convert HEX, RGB, HSL, and accessible color references.

A design-facing definition for quick palette checks, UI handoff cleanup, and contrast-aware color work.

Compress, resize, preview, and download web-ready images locally in the browser.

Use it for WebP, JPEG, and PNG output with quality controls, dimensions, savings, and no upload by default.

Generate a Markdown table of contents from headings locally in your browser.

Use it for README files, documentation pages, and wiki content to auto-build anchor-linked TOCs without uploading text.

Trim lines, remove blank lines, and deduplicate text locally.

Useful for cleaning pasted content, spreadsheet exports, log snippets, and text with stray whitespace or duplicate lines.

Add a prefix or suffix to every line without uploading content.

Handy for adding bullet points, quote characters, comment markers, list numbers, or custom delimiters to multi-line text.

Sort multiline text alphabetically, numerically, or by line length.

Quickly order lists, glossaries, word sets, or CSV rows without leaving the browser or copying to a spreadsheet.

Count characters, spaces, punctuation, words, lines, and paragraphs locally.

Useful for social media copy limits, SEO meta length checks, writing targets, and content audits without uploading data.

Convert full-width and half-width ASCII characters locally.

Essential for CJK text processing, form data normalisation, and fixing mixed-width punctuation in multilingual content.

Escape and unescape Unicode sequences such as \u4F60\u597D.

Use it for source code strings, JSON payloads, regex patterns, and any context that requires ASCII-safe Unicode notation.

Escape and unescape JSON string content for curl, config, and logs.

Useful for embedding multiline strings in JSON config files, curl -d payloads, log entries, and debugging serialised data.

Encode and decode common HTML entities and numeric entity references.

Essential for template authors, content editors, and developers who need safe HTML output without character encoding bugs.

Convert query strings to JSON and JSON objects back to query strings.

Handy for API debugging, link sharing, form payload inspection, and converting GET parameters to structured data.

Strip comments and collapse SQL to a single line locally.

Useful for log normalization, code-embedded queries, and quick review across MySQL, PostgreSQL, and SQL Server dialects.

Convert text to hexadecimal and decode hex back to UTF-8 text locally.

Use it to inspect byte values, decode hex dumps, build hex literals for code, and debug encoding issues without uploads.

Convert images between PNG, JPEG, and WebP locally in the browser.

Use it for web-ready exports, format swaps, and quality-controlled JPEG or WebP output with no upload by default.

Resize one or many images by fixed size or percentage locally.

Useful for thumbnails, avatars, and bulk downscaling with optional aspect-ratio lock and per-image download.

Crop images to square, 16:9, 4:3, or a free ratio locally.

Handy for social headers, profile pictures, and framing with adjustable horizontal and vertical offset.

Rotate by 90-degree steps and mirror images horizontally or vertically.

Use it to fix orientation, mirror scans, and re-export rotated photos without uploading the file.

Strip EXIF, GPS, and camera metadata by re-encoding images locally.

Useful before sharing photos publicly to remove location and device data with a clean PNG or JPEG re-export.

Convert images to Base64 data URLs and render data URLs back to images.

Handy for inlining icons in CSS or HTML, email assets, and quick previews of pasted data URLs.

Generate customizable QR codes with an optional center logo locally.

Use it for links, Wi-Fi, contact cards, and posters with size, margin, error-correction, and color controls.

Convert subtitles between SubRip SRT and WebVTT formats locally.

Useful for HTML5 video captions, player compatibility, and migrating subtitle files without uploads.

Shift every subtitle timestamp by a millisecond offset locally.

Fix out-of-sync captions by nudging SRT or VTT timings earlier or later in one pass.

Merge two SRT tracks into one bilingual subtitle file locally.

Combine a primary and secondary language line per cue for language learning and dual captions.

Decode JWT header and payload and inspect exp, iat, and nbf locally.

Use it for auth debugging and token inspection with human-readable timestamps; no secret or upload needed.

Compute MD5, SHA-1, SHA-256, and SHA-512 hashes locally in the browser.

Useful for checksums, integrity checks, and fingerprinting text with Web Crypto and no upload.

Generate UUID v4 and time-ordered UUID v7 values locally.

Use it for database keys, request IDs, and seed data with bulk generation and copy.

Generate strong random passwords with a secure browser RNG locally.

Tune length and character classes, exclude ambiguous characters, and see a strength estimate.

Test regular expressions with live matches, groups, and a replace preview.

Useful for crafting patterns, inspecting capture groups, and previewing substitutions locally.

Convert between JSON and YAML with adjustable indentation locally.

Handy for config files, CI pipelines, and Kubernetes manifests with two-way conversion and no upload.

Convert JSON arrays to CSV and CSV back to JSON locally.

Useful for spreadsheets, data exports, and flattening nested objects with selectable delimiters.

Compare two JSON documents and list added, removed, and changed keys.

Use it for API response diffs, config reviews, and snapshot comparisons with a path-based summary.

Convert Markdown to HTML and HTML back to Markdown locally.

Handy for docs, README files, CMS content, and email with a live preview and clean round-trip.

Merge multiple PDF files locally with drag-and-drop ordering.

Built as a free browser-local AppHelp utility with copy or download output and no account requirement.

Split one PDF into page ranges and export the results as a ZIP.

Built as a free browser-local AppHelp utility with copy or download output and no account requirement.

Rotate selected or all PDF pages locally before export.

Built as a free browser-local AppHelp utility with copy or download output and no account requirement.

Select PDF pages to remove and download a cleaned copy.

Built as a free browser-local AppHelp utility with copy or download output and no account requirement.

Drag page cards into the right PDF page order.

Built as a free browser-local AppHelp utility with copy or download output and no account requirement.

Add page numbers with position, prefix, and size controls.

Built as a free browser-local AppHelp utility with copy or download output and no account requirement.

Apply a text watermark with opacity and angle controls.

Built as a free browser-local AppHelp utility with copy or download output and no account requirement.

Turn multiple images into one PDF with page size and margin controls.

Built as a free browser-local AppHelp utility with copy or download output and no account requirement.

Convert Word DOCX content to editable Markdown locally.

Built as a free browser-local AppHelp utility with copy or download output and no account requirement.

Turn pasted or uploaded CSV into a Markdown table.

Built as a free browser-local AppHelp utility with copy or download output and no account requirement.

Edit a table grid and copy Markdown table syntax.

Built as a free browser-local AppHelp utility with copy or download output and no account requirement.

Generate a structured project README from form fields.

Built as a free browser-local AppHelp utility with copy or download output and no account requirement.

Generate barcodes and download SVG or PNG assets.

Built as a free browser-local AppHelp utility with copy or download output and no account requirement.

Pick HEX and RGB colors from an uploaded image.

Built as a free browser-local AppHelp utility with copy or download output and no account requirement.

Design linear CSS gradients and copy the CSS rule.

Built as a free browser-local AppHelp utility with copy or download output and no account requirement.

Validate JSON syntax and copy pretty-printed output.

Built as a free browser-local AppHelp utility with copy or download output and no account requirement.

Run JSONPath expressions against JSON locally.

Built as a free browser-local AppHelp utility with copy or download output and no account requirement.

Format or minify XML without uploading data.

Built as a free browser-local AppHelp utility with copy or download output and no account requirement.

Preview upcoming run times for a cron expression.

Built as a free browser-local AppHelp utility with copy or download output and no account requirement.

Format SQL by database dialect in the browser.

Built as a free browser-local AppHelp utility with copy or download output and no account requirement.

Convert Markdown into a Word-compatible DOCX document locally in your browser.

Browser-local markdown to docx converter with copy or download output and no account requirement.

Build a resume with template styles, accent color, and Markdown/HTML/DOCX/PDF export.

Browser-local resume template generator with structured sections, style presets, copy output, and print-to-PDF flow.

Convert SVG markup or files into PNG images locally in your browser.

Browser-local svg to png converter with copy or download output and no account requirement.

Render Markdown into a polished, downloadable image with themes, fonts, and backgrounds.

Browser-local markdown to image generator with curated themes, syntax highlighting, and PNG or JPEG export.

Minify SVG markup by removing comments, metadata, and redundant whitespace locally.

Browser-local svg minifier with copy or download output and no account requirement.

Generate PNG favicon sizes, favicon.ico, and manifest JSON from one source image.

Browser-local favicon generator with padding controls, size previews, ICO output, PWA icons, and no upload requirement.

Add text watermarks to images with position, opacity, and size controls locally.

Browser-local image watermark tool with copy or download output and no account requirement.

Generate color palettes, tints, shades, and exportable CSS variables locally.

Browser-local color palette generator with copy or download output and no account requirement.

Resize images to common social media templates locally in your browser.

Browser-local social media image resizer with copy or download output and no account requirement.

Split a square social image into a downloadable 3 by 3 grid locally.

Browser-local 9 grid image splitter with copy or download output and no account requirement.

Infer a JSON Schema from sample JSON data locally in your browser.

Browser-local json schema generator with copy or download output and no account requirement.

Convert XML documents into JSON locally without uploading data.

Browser-local xml to json converter with copy or download output and no account requirement.

Generate HMAC signatures for API debugging with browser crypto locally.

Browser-local hmac generator with copy or download output and no account requirement.

Convert cURL commands into JavaScript fetch snippets locally.

Browser-local curl to fetch converter with copy or download output and no account requirement.

Convert cURL commands into Axios request snippets locally.

Browser-local curl to axios converter with copy or download output and no account requirement.

Convert cURL commands into Python requests snippets locally.

Browser-local curl to python requests with copy or download output and no account requirement.

Build reusable HTTP header blocks and code snippets locally.

Browser-local http headers generator with copy or download output and no account requirement.

Parse browser, OS, device, and engine hints from User-Agent strings locally.

Browser-local user agent parser with copy or download output and no account requirement.

Format and minify GraphQL queries, mutations, and fragments locally.

Browser-local graphql formatter with copy or download output and no account requirement.

Generate responsive CSS clamp() expressions for typography and spacing.

Browser-local css clamp generator with copy or download output and no account requirement.

Build campaign URLs with UTM parameters and copy clean tracking links.

Browser-local utm builder with copy or download output and no account requirement.