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Free Online Image Converter — HEIC, WebP, PNG, JPG, AVIF & 20+ Formats
How to Convert Images Online
1Choose your conversion
Select input and output formats, or drag and drop your files directly.
2Upload files
Upload up to 10 files at once. Convertify processes them instantly.
3Download results
Download your converted files. Originals are deleted immediately.
Supported Image Formats
HEIC
Apple photo format used by iPhone and iPad. High quality with small file size.
HEIF
High Efficiency Image Format — same as HEIC, used on Apple devices.
WebP
Modern image format by Google. Up to 30% smaller than JPG with the same quality.
PNG
Lossless format that preserves every pixel. Best for screenshots and logos.
JPG
Universal format for photos. Supported everywhere, great balance between quality and file size.
GIF
Classic format for simple animations. Supports transparency and up to 256 colors.
BMP
Uncompressed bitmap format. Maximum quality but very large file size.
TIFF
Professional lossless format used in printing and photography.
AVIF
Next-gen format with excellent compression. Up to 50% smaller than JPG.
PPM
Portable Pixmap format used in Unix/Linux environments.
HDR
High Dynamic Range format storing extended brightness data.
FITS
Flexible Image Transport System used in astronomy and science.
PDF
Portable Document Format. Convert PDF pages to JPG, PNG or WebP images.
AVIF vs WebP vs HEIC vs JPG
Quick comparison to help you choose the right format
AVIF
- Size: Up to 50% smaller than JPG
- Browsers: Chrome, Firefox, Safari
- Transparency: ✓
- Best for: Web performance
WebP
- Size: 25-35% smaller than JPG
- Browsers: All modern browsers
- Transparency: ✓
- Best for: Web compatibility
HEIC
- Size: ~50% smaller than JPG
- Browsers: Safari only
- Transparency: ✓
- Best for: iPhone storage
JPG
- Size: Baseline
- Browsers: All browsers & apps
- Transparency: ✗
- Best for: Universal sharing
Frequently Asked Questions
- Is Convertify completely free?
- Yes. No hidden fees, no watermarks, no signup required. All conversions are free with no file count limits per session.
- Is my data safe?
- All files are processed over encrypted HTTPS and deleted from the server immediately after download. No files are stored permanently, analyzed, or shared with third parties.
- What is the maximum file size?
- Convertify accepts files up to 20 MB per upload. You can convert up to 10 files simultaneously using batch mode.
- Which format is best for web images in 2026?
- AVIF offers the best compression — up to 50% smaller than JPG at equivalent quality. WebP is a close second with broader tool support. Use JPG as a fallback for maximum compatibility.
- Should I convert iPhone HEIC photos to JPG or to WebP?
- Convert to JPG if you need universal compatibility for email, social media, or older apps. Convert to WebP if the images will be used on the web — WebP is 25–30% smaller than JPG.
- Does Convertify preserve transparency?
- Yes. When converting between formats that support transparency (PNG, WebP, AVIF, HEIC, TIFF), alpha channels are fully preserved. JPG and BMP do not support transparency.
- Why is Convertify faster than other converters?
- Convertify uses Rust with libvips, a demand-driven image processing library that streams data without loading entire files into memory. Most competitors use slower Python-based tools.
Which image format should you use in 2026?
The right format depends on where your image will end up. For web delivery, AVIF offers the best compression — up to 50% smaller than JPG at equivalent quality — followed by WebP at roughly 30% smaller.
For universal sharing via email, messaging, or social media, JPG remains the safest choice because every device and app opens it without issues. For images that need transparency (logos, icons, product cutouts), PNG is the standard, though WebP and AVIF also support alpha channels with smaller file sizes.
For Apple devices, HEIC is the native format that iPhone cameras produce — excellent compression, but limited support outside the Apple ecosystem. For professional photography and print, TIFF delivers uncompressed or lossless quality. For documents and multi-page scans, PDF is the universal container.
Image format comparison 2026
| Format | Compression | Transparency | Browser support | Best for |
|---|---|---|---|---|
| JPG | Lossy, good | No | Universal | Photos, sharing, email |
| PNG | Lossless | 8-bit alpha | Universal | Logos, screenshots, editing |
| WebP | Lossy/lossless, excellent | 8-bit alpha | 97%+ browsers | Web images, modern apps |
| AVIF | Lossy/lossless, best | 8-bit alpha | 95%+ browsers | Web delivery, bandwidth savings |
| HEIC | Lossy/lossless, excellent | Yes | Safari only | iPhone photos, Apple ecosystem |
| TIFF | Uncompressed/lossless | Yes | Limited | Print, professional editing |
| GIF | Lossless LZW, 256 colors | 1-bit binary | Universal | Simple animations, memes |
| Mixed | N/A | Via readers | Documents, multi-page scans |
Common conversion workflows
The most common workflow is HEIC to JPG — iPhone users converting Apple's native photo format for sharing with non-Apple users.
Web developers convert PNG to WebP and JPG to AVIF to improve page load times and Core Web Vitals scores. Designers receiving WebP files from the web convert them to PNG for editing in Photoshop or Figma.
Scanner users convert JPG photos to PDF for document submission, tax filing, or insurance claims. Photographers convert TIFF to JPG for client delivery or web publishing.
What makes Convertify different
Convertify runs on a Rust backend with libvips — one of the fastest image processing libraries available. Where most online converters use ImageMagick or Pillow (Python), libvips uses a demand-driven streaming architecture that processes images without loading the entire file into memory.
The JPG to PDF pipeline uses DCTDecode, which wraps your JPG bytes directly into the PDF without recompression — zero quality loss. Color profiles (sRGB, Display P3, Adobe RGB) are preserved during conversion. EXIF metadata including orientation tags are handled correctly — no more sideways photos in your PDFs.
Privacy and security
All conversions happen server-side over encrypted HTTPS connections. Your files are deleted from the server immediately after you download the result — they are never stored permanently, never analyzed, and never shared with third parties.
No account is required to use Convertify, and no personal data is collected beyond what is technically necessary to process the conversion. Files are automatically purged within 6 hours even if not downloaded.
Pro tips for converting images
When converting photographs, JPG and HEIC produce the smallest files because they use lossy compression optimized for photographic content. When converting graphics with sharp edges, text, or flat colors (screenshots, logos, diagrams), PNG or lossless WebP preserves detail better than JPG.
When transparency matters, avoid JPG entirely — it has no transparency support. Use PNG for universal compatibility, or WebP/AVIF for smaller files on the web.
When file size limits are a concern (email attachments, upload portals, government submissions), converting from PNG to JPG or from TIFF to JPG typically produces the biggest size reduction.