What image formats can I convert between?

The converter supports all common image formats: PNG (Portable Network Graphics), JPG/JPEG (Joint Photographic Experts Group), WebP (Google's modern format), GIF (Graphics Interchange Format), BMP (Bitmap), TIFF (Tagged Image File Format), SVG (Scalable Vector Graphics), AVIF (AV1 Image File Format), and HEIC (High Efficiency Image Container from iPhones). You can convert from any supported format to any other—PNG to JPG, JPG to WebP, HEIC to PNG, etc. Some conversions involve trade-offs: converting PNG (lossless) to JPG (lossy) reduces file size but may reduce quality, while JPG to PNG won't improve quality but preserves what's there. Browser support varies—Chrome handles all formats, Safari may have limited HEIC/AVIF support without OS-level codecs.

How do I convert images while preserving quality?

For lossless conversion, use PNG or WebP (lossless mode) as output format—these preserve every pixel exactly. When converting to JPG or WebP (lossy mode), use quality settings of 90-100 to minimize visible quality loss. Original file quality matters—converting a low-quality JPG to PNG doesn't improve quality, just preserves existing quality in a new format. For photos, JPG quality 85-90 is usually indistinguishable from the original while significantly reducing file size. For graphics with text or sharp edges, use PNG to avoid JPG compression artifacts. AVIF and WebP offer better compression than JPG at equivalent quality levels—same visual quality, smaller files. Always keep original files as backups before converting.

Can I batch convert multiple images at once?

Yes! Upload multiple image files simultaneously (typically 10-100 files depending on the tool and your device's memory), select the output format and settings (quality, dimensions, etc.), then convert all images in one operation. All images receive the same settings—if you need different settings per image, convert them separately. Batch conversion saves time when preparing images for websites, creating thumbnail sets, or converting entire photo albums to a different format. Processing happens in your browser, so conversion speed depends on image count, file sizes, and your device's processing power. Desktop computers with 8GB+ RAM handle large batches better than mobile devices. Download converted images individually or as a ZIP archive.

What happens to transparency when converting between formats?

Transparency support varies by format. PNG, WebP, GIF, and TIFF support transparency (alpha channel)—transparent areas remain transparent. JPG and BMP do not support transparency—transparent areas are replaced with a solid background color (usually white or black, configurable in some converters). When converting PNG with transparency to JPG, choose a background color that matches your intended use (white for documents, black for dark websites, or a brand color). Converting JPG to PNG won't add transparency—opaque images stay opaque. For web images needing transparency, use PNG (universal compatibility) or WebP (smaller files, modern browsers). GIF supports binary transparency (fully transparent or opaque) while PNG supports partial transparency (semi-transparent pixels).

How do I optimize images for web use without losing quality?

Web optimization balances file size and quality. Use WebP or AVIF formats for best compression—30-50% smaller files than JPG at equivalent quality, but verify browser support (WebP is widely supported, AVIF is newer). For universal compatibility, use JPG at 80-85 quality for photos, PNG for graphics with text/transparency. Resize images to display dimensions—don't serve a 4000px image if it displays at 800px width. Convert resolution to 72 DPI for web (higher DPI is for print). Remove EXIF metadata (camera settings, GPS data) to reduce file size and protect privacy unless metadata is needed. Serve retina versions (2x size) for high-DPI displays where image quality is critical. Test converted images on actual devices to ensure quality meets your standards.

Can I resize or crop images during conversion?

Many image converters offer resizing alongside format conversion. Specify target dimensions in pixels (e.g., 1920x1080) or as a percentage (50% reduces to half size). Maintain aspect ratio to prevent distortion—if you set width, height adjusts proportionally. Cropping removes portions of the image, changing composition—useful for thumbnails or fitting specific aspect ratios (square for Instagram, 16:9 for YouTube). For batch operations, choose between fitting (resizes to fit within dimensions, may add padding) or filling (crops to exact dimensions). Downscaling (reducing size) maintains quality well. Upscaling (increasing size) creates larger files but doesn't add detail—images may appear blurry. Use resampling algorithms like Lanczos or bicubic for best quality when resizing.

Are EXIF and metadata preserved during conversion?

EXIF (Exchangeable Image File Format) metadata includes camera settings, date/time, GPS location, copyright info, and more. Some converters preserve EXIF data when converting between formats that support it (JPG, TIFF, PNG support EXIF; WebP and AVIF have limited support). Others strip EXIF to reduce file size and protect privacy (GPS data can reveal photo locations). Choose whether to preserve or remove metadata based on your needs: keep it for photo organization and copyright protection, remove it for privacy and smaller files. Color profiles (sRGB, Adobe RGB) affect how colors display—preserving them ensures consistent colors across devices. Thumbnails embedded in EXIF are removed during most conversions, reducing file size with no visible change.

Is my image data secure when using this browser-based converter?

Absolutely! All image conversion happens entirely in your browser using JavaScript and Canvas APIs. Your image files are never uploaded to any server, transmitted over the internet, or stored anywhere except temporarily in your browser's memory during conversion. This makes it completely safe to convert personal photos, confidential documents, proprietary graphics, or sensitive images. Once you download the converted images or close the browser tab, all data is immediately cleared from memory. No server logs, no data retention, complete privacy. Always verify client-side processing by checking network activity in browser developer tools—you'll see zero upload traffic during conversion. This is especially important for HEIC photos from iPhones which often contain GPS metadata.

Which format should I use for different use cases?

Choose format based on use case. JPG: photos for websites, emails, social media (small files, lossy compression, no transparency, universal compatibility). PNG: graphics with text, logos, icons, images needing transparency (lossless compression, larger files than JPG for photos, supports transparency). WebP: modern websites, app images (better compression than JPG/PNG, supports transparency and animation, not supported by older browsers). AVIF: cutting-edge websites with smallest file sizes (best compression, supports HDR, limited browser support as of 2024). GIF: simple animations, very small graphics (limited colors, large files for photos, supports transparency and animation). TIFF: print, professional photography, archival (lossless, very large files, supports layers, not for web). HEIC: iPhone photos (great compression, not widely supported outside Apple ecosystem—convert to JPG for sharing).

Can I convert vector graphics (SVG) to raster images (PNG/JPG)?

Yes! Converting SVG (Scalable Vector Graphics) to raster formats like PNG or JPG rasterizes the vector shapes into pixels at a specified resolution. This is useful when platforms don't support SVG (email clients, social media, some presentation software). Choose output dimensions carefully—SVG scales infinitely, but raster output is fixed. For icons at 512x512px, export PNG at that size. For retina displays, export at 2x size (1024x1024) displayed at 512x512. PNG preserves SVG transparency; JPG requires a background color. Text in SVG becomes pixels—no longer editable or searchable. Complex SVG with fonts may not render correctly if the font isn't available; convert text to paths in SVG editor before conversion. Always keep original SVG files for future edits or scaling.

Image Converter

Convert images between formats: PNG, JPG, WebP, GIF, AVIF, HEIC, and more. Batch convert multiple images, adjust quality, resize, and maintain transparency—all in your browser.