Drop images here or click to upload
Supports all major image formats · Batch up to 20 files
All conversion happens locally in your browser. Images never leave your device.
Convert iPhone HEIC photos to any format. No app install needed.
Convert SVG vector graphics to PNG, JPG, or any raster format.
Convert any image to PDF document. Perfect for sharing and printing.
Convert up to 20 images at once. Download all as a ZIP file.
JPG, PNG, WebP, HEIC, SVG, AVIF, GIF, BMP, TIFF, ICO, PDF — all in one tool.
| Format | Best For | Alpha | Size |
|---|---|---|---|
| JPEG | Photos | No | Small |
| PNG | Graphics, screenshots | Yes | Medium |
| WebP | Web images | Yes | Smallest |
| AVIF | High quality photos | Yes | Very small |
| HEIC | iPhone photos (input) | No | Small |
| SVG | Vectors, logos (input) | Yes | Tiny |
| GIF | Simple animations | Limited | Medium |
| BMP | Uncompressed | No | Very large |
| TIFF | Print / archival | Yes | Large |
| ICO | Favicons | Yes | Small |
| Documents, sharing | No | Medium |
If your goal is to compare formats rather than just convert them, visit our image format guide. If you want every image workflow in one place, jump to the Image Tools hub.
If the converted file is still too heavy for websites, social posts, or email, continue with Image Compress. If the output also needs an exact width, height, or social ratio, use Image Resize. If you are converting iPhone photos and also need a compatibility guide, pair this page with HEIC to JPG.
No-upload conversion workflow: unlike upload-first tools, this page lets you convert screenshots, product photos, client deliverables, icons, and HEIC files entirely in your browser.
Convert image format online free with FreeToolBox — transform JPG, PNG, WebP, AVIF, HEIC, SVG, BMP, GIF, ICO, and PDF-ready image assets between formats instantly in your browser. Whether you need to convert PNG to JPG to reduce file size, change JPG to WebP for better web performance, export HEIC iPhone photos to a universally supported format, or generate favicon-friendly image output, our Image Format Converter handles it all. You can convert multiple images at once, choose output quality, and download results individually or as a ZIP archive.
Unlike cloud-based converters, FreeToolBox converts images entirely in your browser using the HTML5 Canvas API and WebAssembly codecs. Your images never leave your device — no server upload, no privacy risk. The conversion is fast, free, completely watermark-free, and supports a wider range of formats than most online tools.
Choose JPG for photos and widest compatibility, PNG for transparency and screenshots, WebP for balanced web delivery, and AVIF when compression matters most. If you want a fuller explanation of tradeoffs, visit our image format guide.
If the converted image is still too large, follow up with Image Compress. If you need the final dimensions adjusted for social media, websites, or product listings, continue with the Image Resize tool. For the broader workflow around conversion, OCR, cleanup, and editing, use the Image Tools hub.
TinyPNG alternative: unlike upload-first tools that focus on one or two formats, FreeToolBox gives you privacy-first local conversion across HEIC, SVG, WebP, AVIF, BMP, ICO, and classic formats — useful when you need more than just compression.
Input formats: JPG, PNG, WebP, AVIF, HEIC, HEIF, SVG, BMP, GIF. Output formats: JPG, PNG, WebP, AVIF, BMP. HEIC decoding requires the libheif library which loads automatically in the browser.
AVIF generally offers the best compression, followed by WebP, then JPG. PNG is lossless and typically larger. For web use, WebP is the recommended choice due to excellent compression and broad browser support.
Yes. This tool is built to handle mixed conversion workflows including HEIC iPhone photos, SVG graphics, favicon-related outputs, and bulk image folders that need one consistent target format.
Yes. Upload as many images as you need. They will all be converted to your selected format and you can download them all at once as a ZIP file.
No. All format conversions happen entirely within your browser. Your images are never uploaded to our servers or any third party — complete privacy guaranteed.