Instantly convert between all major image formats â JPG, PNG, WebP, HEIC, AVIF, BMP, GIF, and TIFF â with zero quality loss. Our high-speed batch converter processes files entirely inside your browser, so your photos never touch a server. Perfect for optimizing web images, sharing iPhone photos universally, or migrating legacy formats. All 8 tools are free, unlimited, and require no software installation.
Your images never leave your device. Conversion runs entirely inside your browser using the HTML5 Canvas API and WebAssembly codecs â no data is transmitted anywhere.
No upload queues. No waiting for server responses. Format conversion starts the instant you drop a file â most images convert in under 1 second locally.
Drop 50+ files at once and convert them all simultaneously. Batch results are bundled into a single ZIP file for one-click download â no per-file limits.
Lossless conversions where formats allow (PNG â BMP, GIF â PNG). Lossy conversions (â JPG, â WebP) use configurable quality sliders so you control the output.
No sign-ups. No downloads. No file uploads. Here's exactly what happens when you convert an image format:
Drag & drop one or many images onto the converter â or click to browse. We accept JPG, PNG, WebP, HEIC, AVIF, BMP, GIF, and TIFF. Multi-file batch selection is fully supported.
Your browser reads the file using the File API, decodes it via Canvas or WebAssembly codecs (libheif for HEIC, libavif for AVIF), and re-encodes to your target format. The file never leaves your device â verify in DevTools â Network tab.
Single conversions download instantly. Batch conversions are automatically bundled into a ZIP archive. Output is generated as a Blob URL in browser memory and discarded when you close the tab.
Convert PNG files to JPG to significantly reduce file size, making them ideal for web performance and faster loading times.
Convert Now âConvert JPG images to PNG format to enable transparency and achieve lossless image quality, perfect for graphic design elements.
Convert Now âConvert modern WEBP files to universal JPG format for compatibility with older browsers, software, and social media platforms.
Convert Now âConvert HEIC images taken on iPhones and iPads to the standard JPG format for easy sharing and viewing on any device.
Convert Now âConvert AVIF (AV1 Image File Format) to JPG for wider compatibility while maintaining the impressive image quality.
Convert Now âConvert large, uncompressed BMP files to JPG to drastically reduce file size and make them suitable for online use.
Convert Now âConvert single-frame GIFs to PNG format to preserve transparency and achieve better compression without animation.
Convert Now âConvert multi-page or high-quality TIFF files into widely supported JPG format for easy sharing and use in web applications.
Convert Now âUnderstanding the strengths and trade-offs of each format helps you choose the right conversion for your use case.
| Format | Compression | Transparency | Animation | Browser Support | Best For |
|---|---|---|---|---|---|
| JPG / JPEG | Lossy (adjustable) | No | No | Universal | Photos, web images, email attachments |
| PNG | Lossless | Yes (Alpha) | No | Universal | Logos, icons, graphics, screenshots |
| WebP | Both (lossy + lossless) | Yes (Alpha) | Yes | Chrome, Firefox, Safari 14+, Edge | Web performance, modern sites, SEO |
| AVIF | Both (50% smaller than JPEG) | Yes (Alpha) | Yes | Chrome 85+, Firefox 93+ | Next-gen web, HDR photography |
| HEIC / HEIF | Lossy (40% smaller than JPEG) | Yes | Yes (sequences) | Safari only (native) | iPhone/iPad photography |
| GIF | Lossless (256 colors max) | 1-bit (on/off) | Yes | Universal | Simple animations, memes, icons |
| BMP | None (uncompressed) | No | No | Universal | Legacy Windows apps, raw pixel data |
| TIFF | Both (lossless preferred) | Yes | No | Limited | Print, publishing, scientific imaging |
Complete transparency into exactly what technology processes your images during conversion.
Standard formats (JPG, PNG, BMP, GIF) are decoded natively by the browser, drawn to an off-screen <canvas> element, and re-encoded to the target format via canvas.toBlob(). This produces pixel-accurate output using the browser's own optimized image codecs â no external libraries needed for these formats.
HEIC/HEIF decoding uses libheif compiled to WebAssembly â the same open-source library used by GIMP and ImageMagick. AVIF decoding uses libavif (the reference AV1 still image decoder). TIFF parsing uses a JavaScript TIFF decoder. All codecs run at near-native speed and are loaded on-demand (~200â500 KB each).
Lossy output formats (JPG, WebP) include a quality slider (0â100%) that maps directly to the canvas.toBlob(type, quality) parameter. At 85% quality (default), files are 60â80% smaller than the original with no visible difference. Lossless outputs (PNG, BMP) preserve every single pixel with zero data loss.
Our converters make zero outbound HTTP requests with your image data. Verify it: open DevTools (F12) â Network tab before converting. You'll see no upload requests. Files are read via FileReader, processed on <canvas>, and output as local Blob URLs.
Format conversion is a daily need across every industry. Here's how different professionals rely on these tools.
Convert HEIC photos from your camera roll to JPG for sharing with Windows and Android friends, email attachments, social media uploads, and printing services that don't accept Apple's format.
Convert JPG and PNG assets to WebP or AVIF for 30â50% smaller file sizes and better Core Web Vitals scores. Batch-convert entire image directories for site migrations and performance audits.
Convert JPG mockups to PNG for transparent overlays, export BMP files from legacy software into modern formats, and batch-convert client-delivered TIFFs into web-ready JPGs for proofing.
Convert TIFF print files to JPG for digital proofing, convert BMP scanner output to PNG for archival, and prepare web versions of high-resolution print artwork by converting to optimized WebP.
Everything you need to know about converting between image formats using our free browser-based tools.
No â your images never leave your device. Every conversion runs entirely inside your web browser using the HTML5 Canvas API and WebAssembly codecs. We have zero server-side image processing. Verify this yourself: open Developer Tools (F12) â Network tab before converting â you'll see no upload requests.
It depends on the conversion. Lossless conversions (PNG â BMP, GIF â PNG) preserve every pixel with zero quality loss. Lossy conversions (PNG â JPG, HEIC â JPG) apply compression that discards some data â but at our default 85% quality setting, the difference is visually imperceptible. You can adjust the quality slider to balance file size vs. quality for your specific needs.
HEIC (High Efficiency Image Container) is Apple's default photo format on iPhone and iPad. Windows doesn't include HEIC support natively â Microsoft charges $0.99 for the "HEIF Image Extensions" codec in the Microsoft Store. Our HEIC to JPG converter provides a free, instant alternative: it uses a WebAssembly-compiled libheif decoder to convert your iPhone photos to universally compatible JPG format right in your browser.
WebP (developed by Google) delivers 25â35% smaller files than JPEG at equivalent quality and is supported by all modern browsers (Chrome, Firefox, Safari 14+, Edge). AVIF (based on AV1 video codec) delivers 40â50% smaller files and supports HDR, but browser support is still growing (Chrome 85+, Firefox 93+, no Safari yet). Recommendation: Use WebP for maximum browser compatibility today. Use AVIF if you serve images with <picture> fallbacks and want maximum compression for modern browsers.
Yes â all our converters support batch processing. Drop 50+ files at once, and they'll all be converted simultaneously using your browser's multi-threaded capabilities. Batch results are automatically bundled into a single ZIP file for one-click download. There are no per-file or per-session limits.
Since all processing runs locally, limits depend on your device's available RAM, not our servers. Most modern devices (8 GB+ RAM) handle individual images up to 50 megapixels (e.g., 8000Ã6000 px) and 100 MB file sizes. For batch conversions of many large files, closing other browser tabs frees up memory for smoother processing.
Yes â converting to WebP is the single most impactful image optimization for SEO. Google's PageSpeed Insights explicitly recommends serving images in "next-gen formats" (WebP, AVIF). WebP images load 25â35% faster than equivalent JPEGs, directly improving your Largest Contentful Paint (LCP) Core Web Vital metric. Use our batch converter to process your entire image library and implement WebP with <picture> element fallbacks for older browsers.
BMP (Bitmap) stores uncompressed pixel data â a 1920Ã1080 image at 24-bit color uses ~6 MB as BMP vs. ~200 KB as JPG (97% smaller). BMP was the default format in early Windows applications and is still used in some medical imaging, embedded systems, and legacy software. You should absolutely convert BMP to JPG or PNG for any web, email, or modern use case â our converter does this instantly with no quality loss.
Free Image Editor Online was created by a team of web developers and performance engineers who spent years optimizing images for high-traffic websites. We saw that most online converters silently upload your personal photos to unknown servers â even for simple format changes that can be done entirely in the browser. So we built converters that prove image conversion doesn't require sacrificing your privacy or paying for software.
Every converter we build follows three non-negotiable principles:
Need a format we don't support yet? Reach out at hello@freeimageeditor.online â we typically ship new format support within 48 hours.