Image Converter
Convert images between PNG, JPG, WebP, AVIF, HEIC, BMP, SVG, GIF, ICO, and TIFF. Export to PDF or ICO favicon. Batch convert — runs entirely in your browser.
Drop images here or click to upload
PNG, JPG, WebP, AVIF, HEIC, BMP, SVG, GIF, ICO, TIFF. Multiple files OK.
About Free Image Converter
CostlessAI Image Converter lets you convert between PNG, JPG, WebP, AVIF, HEIC, BMP, SVG, GIF, ICO, and TIFF formats. Supports batch conversion, quality controls, and resizing. All processing happens in your browser — images are never uploaded. No signup or watermarks.
Key Features
- -Convert between PNG, JPG, WebP, and HEIC
- -Batch image conversion
- -Quality and compression controls
- -Browser-based processing
- -No signup or watermarks
Common Use Cases
- -Converting HEIC photos from iPhone
- -Optimizing images for web (WebP)
- -Preparing images for print (high-quality JPG)
- -Batch converting screenshots
- -Format standardization for projects
Free Image Converter is a free tool by CostlessAI. Available at costlessai.com/tools/image-converter. No signup required.
// FAQ
What image formats can I convert between?
You can convert between PNG, JPG/JPEG, WebP, AVIF, HEIC/HEIF, BMP, SVG, GIF, ICO, and TIFF as inputs. Output formats include PNG, JPG, WebP, AVIF, BMP, GIF, PDF, and ICO. HEIC files from iPhones are fully supported.
How do I convert HEIC photos from my iPhone?
Simply drop your .heic or .heif files onto the upload zone. The tool uses the heic2any library to decode HEIC files in your browser, then you can convert to any output format like JPG, PNG, or WebP. No app install needed.
Can I generate favicons (ICO files) from images?
Yes! Select ICO as the output format and the tool will generate a proper multi-size ICO file containing 16x16, 32x32, and 48x48 versions of your image — ready to use as a website favicon.
Does AVIF conversion work in all browsers?
AVIF output requires browser support for the AVIF codec. Chrome, Firefox, and Safari 16+ support AVIF. If your browser doesn't support it, the AVIF option will be greyed out. All other formats work in every modern browser.
Can I convert multiple images at once?
Yes! This tool supports batch conversion. Drop or select as many images as you want, choose your target format and quality, then convert them all with one click. You can download each result individually or use the Download All button.
Can I resize images during conversion?
Yes. You can keep the original size or enter a custom width and height. Lock the aspect ratio to maintain proportions when changing one dimension. The resize applies to all images in the batch.
Does quality affect file size?
Yes. For lossy formats like JPG, WebP, and AVIF, lowering the quality slider reduces file size significantly. A quality of 80-85% is usually the sweet spot. PNG and BMP are lossless so quality doesn't apply.
Are my images uploaded to a server?
No. Everything runs locally in your browser using the HTML5 Canvas API. Your images are never sent to any server, making this one of the most private image converters available.