Disclosure: some links to paid products on Filemere are, or may become, affiliate links. If you buy through one, we may earn a commission at no extra cost to you. That never decides what we list: free options are shown first, and every price is copied from the official page on the date shown. How we choose and how we earn.
Image converter & resizer
Got a WebP that will not open, or a PNG that is too large? Convert JPG, PNG and WebP into each other, resize at the same time, and process many files at once.
🔒 Runs in your browser – files are not uploaded
Which format should I use?
| Format | Best for | Transparency |
|---|---|---|
| JPG | Photos; opens everywhere | No (filled with the background colour) |
| PNG | Screenshots, logos, text; lossless | Yes |
| WebP | Websites; usually smaller than JPG at similar quality | Yes |
HEIC (iPhone) photos
Most browsers outside Safari cannot decode HEIC, so this page cannot convert it on Windows or Android. On an iPhone, Settings → Camera → Formats → “Most Compatible” saves new photos as JPG; on a Mac, Preview can export HEIC to JPG.
Resizing
Give a maximum width and/or height. The image keeps its proportions and fits inside that box. By default it never enlarges, since enlarging cannot add detail.
Desktop and paid alternatives
Free options first. Facts come from each official page on the date shown.
macOS Preview
- Merge, reorder, rotate and delete PDF pages
- Export images to PDF and convert image formats
- Mac only
Source: official page, checked 2026-11-05. Prices and limits change – confirm before buying.
Visit macOS Preview →Wondershare UniConverter
- Graphical converter + compressor with batch processing and GPU acceleration
- Official FAQ: the trial converts only 1/3 of a video's length
- Official store listed a Yearly Plan at US$45.99/yr (auto-renews) on the date checked
Source: official page, checked 2026-11-05 · official pricing. Prices and limits change – confirm before buying.
Visit Wondershare UniConverter →Questions
Why is my PNG bigger than the JPG?
PNG is lossless. For photos, JPG or WebP are much smaller.
Can I convert GIF animations?
Only the first frame is converted.