Convert Images
Between Any Format
Convert images between JPG, PNG, WebP, BMP, GIF, AVIF, and ICO. No upload — all processing happens privately in your browser.
Drag & drop images here or click to upload
JPG, PNG, WebP, GIF, BMP, TIFF, AVIF, ICO, SVG
What Is Image Conversion?
Image conversion is the process of changing a picture from one file format to another — for example, from PNG to JPEG, or from BMP to WebP. Different formats suit different needs: JPEG and WebP are great for photos and web use because they compress well; PNG preserves transparency and is lossless; BMP is uncompressed; ICO is used for favicons and app icons; AVIF is a modern format that often produces the smallest files at similar quality.
Our online image converter runs entirely on your device. You upload an image (or several), choose the output format and optional quality and resize settings, and the tool processes and encodes it in the new format. Nothing is sent to a server — your files stay on your device, which keeps your content private and avoids upload limits.
Converting images is useful when a website or app only accepts certain formats (e.g. JPEG or PNG), when you want to reduce file size for email or web (e.g. PNG to WebP), or when you need a specific format for print or design tools. Batch conversion lets you process many files at once to the same format and settings, saving time compared to converting one by one in a desktop app.
You can use this tool on any device — Windows, Mac, Linux, or mobile — without installing software. There is no account required, no usage cap, and no watermark. You get instant conversion, optional resize, quality control for lossy formats, and an automatic download of each converted file.
Discover Features
Wide format support, batch conversion, quality control, resize, and full privacy — all on your device
Wide Format Support
Convert between JPG, PNG, WebP, BMP, GIF, AVIF, and ICO. Upload from any of these formats plus TIFF and SVG. All conversions happen on your device with no server upload.
Batch Conversion
Add multiple images at once and convert them all to the same format with one click. Each file shows its status (pending, converting, done) and you can download each result or remove files from the list as needed.
Quality Control
For lossy formats (JPEG, WebP, AVIF) choose a quality level from 1 to 100 with a slider; default is 85 for a good balance. For lossless formats (PNG, BMP, GIF, ICO) no quality setting is needed — the output is lossless.
Resize & Scale
Optionally resize images before converting. Enter width and height, lock aspect ratio, or use presets (50%, 75%, 100%, 150%, 200%). Useful for thumbnails, avatars, or reducing file size.
Privacy-First
Images are decoded and re-encoded entirely on your device. Nothing is uploaded to any server. Your files never leave your device — close the tab and nothing remains.
Instant Download
After conversion, the result downloads automatically. You also see a preview of the converted image and its new file size so you can verify quality and size before saving elsewhere.
How to Convert Images Online
Four simple steps — upload, choose format, set options, convert and download
Upload Your Image(s)
Drag and drop one or more images onto the upload area, or click to browse. Supported formats include JPG, PNG, WebP, GIF, BMP, TIFF, AVIF, ICO, and SVG. You can add multiple files for batch conversion.
Choose Output Format
Select the target format: JPEG for universal compatibility, PNG for lossless and transparency, WebP or AVIF for smaller files, BMP for uncompressed, GIF for simple animation support, or ICO for favicons.
Set Quality & Resize (Optional)
For JPEG, WebP, or AVIF use the quality slider. Optionally open the resize section to change dimensions or use percentage presets. Lock aspect ratio to avoid distortion.
Convert and Download
Click Convert (per file) or Convert all. The tool processes images on your device and triggers a download for each. You can preview the result and see the new file size before closing.
Free vs Paid — Image Converter
Get started free, upgrade when you need more power.
Unlock the Full Power of Image Converter
Remove daily limits, process larger files up to 500 MB, enable batch processing, and get priority support.
Media & Image Tools includes:
- 7 image & media tools
- Unlimited daily uses
- 100 MB file size limit
- Batch processing
- All output formats
Also available in the All Tools Bundle
User Questions & Reviews
Real questions from users and expert answers from the OnlinePCTools team
“I have a mix of PNG and JPEG screenshots and need everything as WebP for my website. Can I do them all at once?”
Elena Vasquez
Web Developer, Madrid, Spain
Yes. Add all your images (drag and drop or select multiple). Choose WebP as the output format, set the quality slider (e.g. 85), then click Convert all. Each file will be converted and downloaded. Everything is processed on your device, so your screenshots never leave your device.
— OnlinePCTools Team
“Does converting to JPEG lose quality? I need to send photos by email without huge file sizes.”
David Chen
Photographer, Singapore
JPEG is lossy, so some detail is discarded. At quality 85 (the default), the result is usually visually very close to the original and much smaller. For email, 80–90 is a good range. If you need no loss at all, choose PNG instead — files will be larger but pixel-perfect.
— OnlinePCTools Team
“Are my images uploaded to your servers? I'm converting confidential design mockups.”
Rachel Foster
UX Designer, Austin, USA
No. Conversion happens entirely on your device. Nothing is sent to our or any third-party server. Close the tab and no copy remains. It is as private as using a desktop app on your own computer.
— OnlinePCTools Team
“Can I create a favicon (ICO) from a PNG logo? What size will it be?”
Omar Hassan
Front-End Dev, Cairo, Egypt
Yes. Upload your PNG, select ICO as the output format, and convert. The tool produces an ICO file containing a 32×32 version of your image (suitable for favicons). The ICO format stores the image data in a way that is universally recognized for favicons and app icons.
— OnlinePCTools Team
Use Cases
Common scenarios where image format conversion saves time and solves compatibility issues
Web Development
Convert design assets to WebP or AVIF for smaller page weight and faster loading. Batch-convert PNGs to JPEG where transparency is not needed.
Social Media
Resize and convert images to the dimensions and formats required by different platforms (e.g. JPEG for Instagram, PNG for graphics) without installing software.
Print Design
Convert BMP or TIFF sources to high-quality JPEG or PNG for print workflows, or scale images to exact dimensions needed for layout.
Email Marketing
Resize and compress images to JPEG or WebP so email campaigns load quickly and stay under size limits while keeping visuals clear.
App Development
Generate ICO or PNG assets in multiple sizes from a single source image for app icons and splash screens. Use the resize option for exact dimensions.
Archiving
Convert legacy BMP or TIFF files to PNG for lossless archiving, or to JPEG for smaller archives when full fidelity is not required.
Frequently Asked Questions
Common queries about the Image Converter tool
Q1. What image formats can I convert from?
Q2. What formats can I convert to?
Q3. Are my images uploaded to a server?
Q4. Can I convert multiple files at once?
Q5. How does the resize option work?
Q6. Why did my AVIF or GIF conversion fail?
Q7. Is the tool free?
Q8. Can I use this on my phone?
Related Tools
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