Image Format Converter

Why a Universal Image Converter?

Creators, developers, marketers, and photographers often juggle multiple image formats — from modern web formats like WebP and AVIF to legacy and camera-native files such as HEIC and RAW. This tool streamlines conversion with a focus on quality, file size, and reliability, while keeping your images private by processing them directly in your browser.

Core Capabilities

• Supported Formats (Now): Inputs — JPG, PNG, WebP, GIF (first frame), BMP, SVG. Outputs — JPG, PNG, WebP.
• Batch Conversion: Drag and drop hundreds of files and apply a single recipe (format, quality, size, background, color mode) to all.
• Lossless vs. Lossy: Choose lossless (PNG, lossless WebP) or lossy (JPEG/WebP with adjustable quality) depending on your goal.
• Custom Quality Settings: Control compression quality and color modes (RGB/Grayscale).
• Resolution & DPI: Resample images by pixel dimensions and optionally set DPI for print workflows.
• Transparency Handling: Preserve alpha (PNG/WebP) or replace transparency with a solid background when exporting to formats like JPG.
• Format‑Specific Notes:
  • JPG: Adjustable quality; progressive encoding may vary by browser support.
  • PNG: Lossless export; palette optimization varies by browser.
  • GIF: Exports the first frame (animation not preserved).
  • SVG: Rasterized to the chosen output format.
  • WebP: Lossy or lossless modes.
• File Size Optimization: Visualize size vs. quality trade‑offs for web publishing.

Note: Some advanced codecs and vector formats may require on‑demand WASM decoders/encoders. Features are gracefully degraded if a codec isn’t available in your browser.

How to Use

1. Upload or Drop Files: Add one or many images. The tool detects formats automatically.
2. Pick Output Format: Select JPG, PNG, WebP, TIFF, or other available targets.
3. Tune Settings: Adjust quality, resize dimensions, DPI, color mode, and transparency/background.
4. Batch Convert: Apply the same settings to all files or customize per file.
5. Download: Export individually or as a ZIP (for batches).

Tip: For web, try WebP (lossy, 70–85% quality) for photos and PNG (lossless) for graphics with sharp edges/transparency.

Best‑Practice Presets

• Web Photos (Balanced): Format = WebP (lossy), Quality = 80, Resize longest side to 1920 px, sRGB.
• Print‑Friendly: Format = JPEG, Quality = 92, Resize as needed, DPI = 300, sRGB.
• Logos/Icons: Format = PNG (lossless), Preserve transparency.

Accuracy, Methodology, and Limitations

• Client‑Side Processing: Conversions run in your browser using Canvas. Your images are not uploaded to our servers.
• Color & Bit Depth: Most browsers process via 8‑bit sRGB. Grayscale conversion is supported.
• DPI: Setting DPI affects metadata and intended print density; it does not increase pixel detail. For sharper prints, increase pixel dimensions.
• Vector Formats: SVG is rasterized reliably. PDF/EPS/AI are not currently supported.
• RAW/HEIC/TIFF: Not currently supported. Use your OS viewer/editor to export to PNG/JPG/WebP first, or try a different browser if it natively decodes the format.
• Animated GIF: Currently exports the first frame only.

Privacy & Security

• Processing happens locally in your browser; files never leave your device.
• Temporary previews are stored in memory and cleared when you reload or leave the page.
• No analytics or hidden uploads for conversions.

For more details, see our Privacy Policy.

About the Author and Review

• Author: This tool and guide were created by Devanshu Agarwal and the ChangeBlogger team, who build privacy‑first web utilities for creators and developers.
• Experience: We maintain a suite of production image tools (EXIF Viewer/Remover, Image Compressor, AI Image Editor) used by thousands of professionals.
• Editorial Review: Content is periodically reviewed for accuracy and updated as browser codecs evolve. Last technical review: 2025-08-20.

Frequently Asked Questions

1. Does this work offline?
Not fully. Some codecs are loaded on demand from a CDN and require a connection.

2. Will my images be uploaded or stored?
No. Conversions run locally in your browser; nothing is stored on our servers.

3. Can I convert HEIC, RAW, EPS, or AI files?
Where supported. If your browser lacks a compatible decoder, the tool will let you know and suggest alternatives (e.g., exporting via Photos/Preview, or using a different browser).

4. Why doesn’t changing DPI make my image sharper?
DPI is metadata. To increase print sharpness, increase pixel dimensions.

5. How do I keep transparency when converting to JPG?
JPG doesn’t support transparency. Choose PNG/WebP (lossless) or add a background color when exporting to JPG.

6. Can I keep animated GIFs animated?
Not currently. The tool exports the first frame as a still image.

7. Is CMYK supported?
Most browsers operate in sRGB. CMYK → RGB conversion may occur during decoding; preserve CMYK by exporting from your desktop editor.

8. How big of a batch can I process?
Hundreds of files are possible; performance depends on your device memory/CPU and the chosen codecs.

Related Tools

• Image Compressor — shrink images for the web while keeping quality.
• EXIF Viewer & Remover — inspect and strip hidden metadata.
• AI Image Editor — quick, private edits in your browser.
• Image to PDF — export JPG/PNG into a single PDF.

References and Further Reading

• MDN: Canvas API — https://developer.mozilla.org/en-US/docs/Web/API/Canvas_API
• Squoosh Codecs (WASM-based) — https://github.com/GoogleChromeLabs/squoosh
• WebP Format — https://developers.google.com/speed/webp
• HEIC/HEIF Overview — https://nokiatech.github.io/heif/

If you find an edge case or a format that doesn’t load, please report it. We continuously improve support as new codecs become reliably available in browsers.