47 free tools — image converters, compressors, favicon generator, SEO meta tags. All run in your browser. No uploads, no account, no watermark.
New tools: HEIC to JPG and HEIC to WebP — convert iPhone photos directly in the browser with no upload. Safari uses the native OS HEIC decoder (zero library cost); Chrome and Firefox lazy-load a WebAssembly build of libheif only when a HEIC file is detected, leaving all other pages unaffected. Batch conversion and ZIP download supported.
12 new browser-based text converters: HTML ↔ Markdown, HTML ↔ JSX, JSON ↔ CSV, XML ↔ JSON, YAML ↔ JSON, and Base64 Encode/Decode. All tools run entirely in the browser — no uploads, no server calls. Each page includes full SEO content: HowTo steps, format comparison tables, 12 FAQ items, and three JSON-LD schemas (WebApplication, HowTo, FAQPage).
New tools: Product, Article, FAQ, Organization, Local Business, and Breadcrumb schema generators — each with live JSON-LD preview, Google Rich Results eligibility validation, missing field warnings, and a direct "Test in Google" link. Fields based on official Google documentation. No signup required.
Every tool on this site is built exclusively on native browser APIs and one lightweight library. There is no backend, no cloud function, and no third-party processing service. Here is exactly what runs inside your browser tab when you use a tool.
Draws every image onto an off-screen canvas element, then exports it to the target format via toBlob(). Used by all image converters, compressors, and the favicon renderer.
Creates in-memory object URLs (URL.createObjectURL) for instant file previews and downloads — no server round-trip, no upload, no temporary file storage.
Reads files dropped or selected by the user directly in the browser. File objects are passed to the Canvas pipeline without any network activity.
Generates cryptographically unique IDs (crypto.randomUUID()) for each file entry in the processing queue to track state without collisions.
ArrayBuffer, DataView and Uint8Array are used to construct binary .ico files from scratch — writing the ICO header, directory entries and image data manually.
An in-browser library that assembles ZIP archives from Blob objects. Used for batch downloads — all converted or compressed files in a single .zip.
Every tool on this site runs entirely in your browser — no files are uploaded, no account is required, and nothing is stored on a server. Processing happens locally using browser APIs like Canvas and the File System, which means your data stays on your device. It also means the tools work instantly, without any round-trips to a backend.
Most online tools upload your files to a remote server for processing — your images, documents, and data pass through infrastructure you don't control. Browser-based tools work differently: the processing logic runs inside your own browser tab. You can open DevTools, check the Network panel, and confirm that no files are being sent anywhere. For sensitive files — client assets, internal screenshots, private documents — this matters.
There is no registration, no email confirmation, no free tier with a file size cap, and no watermarks. Open the tool, use it, and leave. Every tool on this site works the same way from the first visit — nothing changes if you come back without an account, because there is no account system.
Once a page has loaded, the tool keeps working without a network connection. There is no API to call and no server to reach. This makes the tools reliable on unstable connections, in transit, or in air-gapped environments where uploading files to an external service is not an option.
Convert between 20+ image format pairs — JPG, PNG, WebP, AVIF, GIF, BMP, TIFF. Compress JPG, PNG and WebP files with a per-file quality slider. Generate favicons from text, emoji, or image. All processing happens locally — no uploads.
Generate complete SEO meta tags — title, description, canonical URL, robots directives, Open Graph, Twitter Card, and hreflang. Live Google search preview shows exactly how your page will appear in search results.
New developer utilities are released approximately once a week — converters, formatters, validators, and other browser-based tools for everyday dev workflows.