Format Converter
Convert between PNG, JPG, WebP, AVIF, and TIFF with quality controls and batch support.
Guide
How to use Format Converter
Upload images
Upload one or more images. Supported formats: PNG, JPG, WebP, HEIC, AVIF, TIFF.
Choose output format
Select PNG, JPG, WebP, AVIF, or TIFF as the target format and adjust quality.
Review and convert
Click Convert to process. The tool handles batch conversion automatically.
Download
Download individual files or all results as a ZIP archive.
Frequently Asked Questions
Which image format should I choose?▼
PNG for transparency and lossless quality, JPEG for photos with smaller file sizes, WebP for modern web use with good compression, AVIF for the best compression-to-quality ratio.
Does format conversion reduce image quality?▼
Converting to a lossy format like JPEG or WebP may reduce quality depending on the compression level you choose. PNG and TIFF conversions are lossless.
Can I convert multiple images in batch?▼
Yes, upload multiple images and the converter processes them in a single batch. You can download results individually or as a ZIP archive.
What image formats are supported for conversion?▼
Upload PNG, JPG, WebP, HEIC, AVIF, or TIFF and convert to any of these formats. HEIC and AVIF offer modern compression with excellent quality.
What format should I use for Amazon product images?▼
Amazon accepts JPEG and PNG formats for product images. JPEG is preferred for main images because it offers smaller file sizes with excellent quality. PNG is better for images with text, graphics, or transparency. Amazon recommends sRGB color mode and at least 2,000 pixels on the longest side.
What is the best format for website images?▼
WebP is the best choice for modern websites — it offers 25-35% smaller file sizes than JPEG with equivalent visual quality and supports transparency. JPEG is the safest fallback for maximum browser compatibility. PNG is best when you need lossless quality and transparency support.
Does converting between lossless formats reduce quality?▼
No, converting between lossless formats like PNG and TIFF preserves all original pixel data exactly. No quality is lost regardless of how many times you convert between lossless formats. JPEG-to-PNG conversion also preserves the exact JPEG data (but cannot restore quality lost during JPEG compression).
What is AVIF and why should I use it?▼
AVIF (AV1 Image File Format) is a next-generation image format that offers superior compression — typically 50% smaller files than JPEG at the same visual quality. It supports HDR, wide color gamut, and transparency. Browser support is growing (Chrome, Firefox, Safari). Best for modern web applications where file size matters.
Can I convert images while keeping the transparent background?▼
Yes, PNG, WebP, and TIFF all support transparency (alpha channels). QuickBG preserves the alpha channel when converting between these formats. JPEG does not support transparency — converting a transparent PNG to JPEG will replace transparent areas with a solid white background.
What quality setting should I use for JPEG?▼
Quality setting 80-90% offers the best balance of file size and visual quality for most uses. Setting 100% produces the largest files with minimal compression artifacts but is usually indistinguishable from 95% in practice. Below 60%, compression artifacts become increasingly visible. For web use, 80% is recommended.
What is the difference between TIFF and PNG?▼
Both are lossless formats that preserve full quality, but TIFF supports layers, multiple pages, and professional color spaces (CMYK, LAB) making it the standard for print and archival workflows. PNG offers better web compression and broader browser support. Use PNG for digital/online use, TIFF for print and archival.
Can I convert HEIC images from iPhone?▼
Yes, QuickBG accepts HEIC uploads and can convert them to any supported output format. HEIC is Apple's default photo format that offers good compression with high quality. Convert HEIC to JPEG for broad compatibility or to PNG for transparency support.
What is batch conversion and how does it work?▼
Batch conversion lets you upload multiple images and convert them all at once to the same output format and quality setting. All files process sequentially in your browser. You can download results individually or as a ZIP archive containing all converted files. This saves significant time when processing large image sets.
What format is best for sending images via email?▼
JPEG at quality 70-80% produces the smallest file sizes with acceptable quality for email attachments. Most email providers limit attachment sizes to 10-25MB. WebP offers even smaller sizes for email but some email clients may not display WebP images inline. PNG is best for images with text or graphics.
How does QuickBG converter compare to other format converters?▼
Most free online converters limit file size, add watermarks, or upload your images to external servers. Desktop converters like Adobe Bridge require software installation and licenses. QuickBG converts images entirely in your browser using WebAssembly — your images never leave your device. It supports all major formats, batch processing, quality controls, and ZIP download. The conversion is private, fast, and completely free with no limits.
Why Use QuickBG Image Converter
Different platforms and use cases demand different image formats, and converting between them while maintaining quality is essential. QuickBG Image Converter supports all major formats — PNG, JPG, WebP, AVIF, HEIC, and TIFF — with batch processing for efficiency. PNG preserves transparency and delivers lossless quality for images with cutout subjects. JPG offers smaller file sizes ideal for photographs and web use. WebP and AVIF provide modern compression with excellent quality-to-size ratios. TIFF is the professional standard for print and archival purposes. The converter handles multiple images in a single batch, letting you download results individually or as a ZIP archive, saving significant time when processing large sets.
How Format Conversion Works
QuickBG converts images by decoding the source format into raw pixel data, then encoding that data into the target format using optimized compression libraries. For lossless formats like PNG and TIFF, all original pixel data is preserved exactly. For lossy formats like JPEG and WebP, you control the quality level via a slider — higher quality means larger file sizes with less compression artifacts. AVIF offers superior compression efficiency, producing smaller files than JPEG at equivalent visual quality. The conversion happens entirely in your browser using WebAssembly-based codecs, meaning your images never upload to a server. Batch mode processes all selected images sequentially and packages them for convenient download.
Tips for Choosing the Right Format
Use PNG when you need transparency or lossless quality — ideal for logos, graphics, and images with text. Use JPEG for photographs where smaller file size matters more than absolute quality, adjusting the quality slider to balance size and appearance. Use WebP for web content as it combines good compression with broad browser support. Use AVIF for the best compression efficiency on modern browsers. Use TIFF for print workflows and archival storage. If you are unsure, PNG is the safest choice for versatility. For batch conversion, process all images at the same quality setting for consistent output. Always preview a sample before converting a large batch.
See Format Conversion in Action
Upload an image and watch QuickBG convert it between formats in real time. The demo shows side-by-side comparison of original and converted output with file size, quality metrics, and format details. Try converting a PNG to WebP to see how much bandwidth you can save without sacrificing visual quality.
Everything You Need for Format Conversion
Multiple Format Support
Convert between PNG, JPEG, WebP, AVIF, TIFF, and HEIC — all major image formats supported.
Batch Processing
Upload multiple images and convert them all at once. Download results individually or as a ZIP archive.
Fast Conversion
Processed entirely in your browser using WebAssembly — no server uploads, no waiting in queues.
Quality Controls
Adjust compression quality with a slider. Preview output before downloading to find the perfect balance.
Customizable Output
Set output dimensions, strip metadata, and choose color profiles for professional workflows.
Transparency Preserved
Alpha channels are preserved when converting between PNG, WebP, and TIFF — no data loss.
Built for Speed, Privacy, and Quality
Unlike other converters that upload your images to remote servers, QuickBG processes everything locally in your browser. Your files never leave your device. Combined with batch support, format flexibility, and fine-grained quality controls, QuickBG gives you a professional-grade conversion workflow without the privacy trade-offs or subscription fees.
How Format Conversion Really Works
Image format conversion is the process of decoding a source image's compressed pixel data back to raw RGB or RGBA values, then re-encoding those values using the target format's compression algorithm. Lossless formats like PNG and TIFF preserve every pixel exactly, while lossy formats like JPEG and WebP discard perceptually less important information to reduce file size. The quality slider in QuickBG controls how aggressively the lossy encoder discards data — higher quality means more preserved detail but larger files.
Modern formats like WebP and AVIF use advanced compression techniques such as block prediction, entropy coding, and frequency transforms to achieve significantly smaller file sizes than JPEG at equivalent visual quality. AVIF, based on the AV1 video codec, can reduce file sizes by up to 50% compared to JPEG. QuickBG uses WebAssembly-compiled versions of industry-standard libraries like libpng, libjpeg-turbo, libwebp, and libavif to perform these conversions directly in your browser.
Format Conversion for Every Workflow
Web Developers
Convert images to WebP and AVIF for faster page loads. Reduce bandwidth usage by up to 80% compared to JPEG while maintaining visual quality.
Photographers
Export edited photos to JPEG for client delivery, TIFF for archival, and PNG for web portfolios. Batch process entire shoots in one go.
E-commerce Sellers
Convert product photos to JPEG for Amazon listings and PNG for cutout images with transparency. Ensure every marketplace gets the right format.
Designers
Convert between formats throughout your workflow — TIFF for print production, PNG for web assets, and JPEG for quick client previews.
Best Format for Every Platform
| Platform | Recommended Format | Why |
|---|
Get the Most Out of Format Conversion
Always start from the original
Convert directly from your original source file rather than a previously compressed JPEG. Each re-encoding degrades quality further.
Match format to content type
Use PNG for screenshots, text, logos, and graphics with sharp edges. Use JPEG for continuous-tone photographs. Use WebP or AVIF for web delivery.
Quality 85% is the sweet spot
For web use, quality setting 85% produces visually lossless results at roughly half the file size of 100%. Anything above 95% is typically wasteful.
Batch convert at the end
Do all your editing first, then convert formats as the final step. This avoids unnecessary re-encodes and preserves maximum quality throughout your workflow.
Common Conversion Issues
Converted image quality looks worse than expected
The quality slider was set too low for your use case. Increase to 85% or higher. If converting from JPEG, note that previously compressed JPEGs will show artifacts after re-encoding.
Transparent areas turned white after conversion
You converted a PNG with transparency to JPEG, which does not support alpha channels. Use PNG, WebP, or TIFF as the output format to preserve transparency.
File size is larger than the original after conversion
Converting a lossy format like JPEG to a lossless format like PNG preserves every pixel but produces a larger file. For smaller files, convert to WebP or AVIF instead.
Converted image has incorrect colors
Some formats handle color profiles differently. Strip EXIF metadata during conversion or ensure the source image uses sRGB color space for consistent results across browsers.
QuickBG Converter vs Other Format Conversion Tools
Squoosh (by Google) offers excellent WebP and AVIF compression but lacks batch processing and TIFF support. CloudConvert supports many formats but charges per conversion after a free quota. Adobe Bridge includes batch conversion but requires a Creative Cloud subscription. Most free online converters upload your images to unknown servers, raising privacy concerns. QuickBG Converter processes everything client-side in your browser using WebAssembly codecs — your images never leave your device. It supports all major formats including PNG, JPEG, WebP, AVIF, TIFF, HEIC, and AVIF, with batch processing, quality controls, target file size optimization, and ZIP download. The privacy benefit alone (no server uploads) sets it apart from most free alternatives.
Real Uses for Image Format Conversion
E-commerce sellers convert product photos to JPEG for Amazon listings (smaller file sizes for faster upload) and PNG for images with cutout subjects and transparent backgrounds. Web developers convert images to WebP and AVIF to reduce page load times while maintaining visual quality — often achieving 50-80% file size reduction compared to JPEG. Graphic designers convert between formats for different workflow stages: TIFF for print production, PNG for web assets, and JPEG for portfolio uploads. Photographers convert RAW camera exports to JPEG for client delivery and TIFF for archival storage. Social media managers convert images to platform-compatible formats ensuring proper display across all channels. Print shops convert customer files to TIFF format for high-quality print output.
Convert Images in 5 Simple Steps
Convert Product Photos to WebP
Upload your product photos to QuickBG's Format Converter. You can select multiple files for batch processing.
Select WebP as the output format from the dropdown menu.
Set the quality slider to 85% — WebP at 85% typically matches JPEG at 95% visual quality with 30-50% smaller file size.
Click Convert to start processing. All images convert sequentially in your browser.
Review the file sizes compared to your originals — WebP files are typically 25-35% smaller than equivalent JPEG files.
Download individual files or click Download All to receive a ZIP archive.
Upload the WebP files to your website with a JPEG fallback using the picture element for maximum browser compatibility.
What Users Say About QuickBG Converter
“QuickBG's converter saved me hours of work. I batch-converted 200 product images to WebP for my Shopify store and cut page load time by 40%.”
— — Alex M., E-commerce Store Owner
“Finally a converter that respects privacy. No uploads to unknown servers, no signup, and it handles HEIC from my iPhone perfectly.”
— — Sarah K., Photographer
“The quality slider with live preview is genius. I can dial in exactly the right compression for web use without guesswork.”
— — James R., Web Developer
Learn More About Image Optimization
Format Conversion Technical Details
Input Formats
PNG, JPEG, WebP, AVIF, HEIC, TIFF
Output Formats
PNG, JPEG, WebP, AVIF, TIFF
Max File Size
No hard limit (browser memory dependent)
Processing Engine
WebAssembly (libpng, libjpeg-turbo, libwebp, libavif)
Batch Size
Unlimited sequential batch processing
Privacy
100% client-side — no images uploaded to any server
What to Avoid
Re-encoding JPEG to JPEG repeatedly
Every JPEG re-encoding applies compression artifacts that accumulate with each save. Always edit from the original source file, not a previously compressed JPEG.
Using JPEG for images with text or graphics
JPEG's lossy compression creates artifacts around sharp edges and text. Use PNG for any image containing text, logos, or line art.
Not checking transparency support
Converting a transparent PNG to JPEG results in a white background replacing transparent areas — which may not be obvious until the image is placed on a dark background.
Using maximum quality for everything
100% quality JPEGs are often 2-3x larger than 90% quality with no visible difference. Match quality to the actual use case rather than always using maximum settings.
Start Converting Images Free
No signup, no watermark, no limits. Convert your images to any format in seconds — entirely in your browser.