How does in-browser image conversion work?

ToolBuddy uses native browser APIs (such as HTML5 Canvas, WebAssembly, and modern image decoders) to open, resize, and re-encode your files directly inside your device's memory. Because no files are uploaded to any server, conversions are virtually instant and completely private.

Which format produces the smallest file size without losing visual quality?

WebP is generally the best choice for web use. It provides equivalent visual quality to JPG while producing files that are typically 25% to 35% smaller. It also supports alpha transparency, which JPG does not.

What happens to transparent backgrounds when converting PNG or SVG to JPG?

JPG does not support transparency. When you convert a transparent PNG, WebP, or SVG to JPG, ToolBuddy allows you to choose your desired background fill color (white by default, black, or soft gray) to ensure clean edges and no unexpected black borders.

Can I convert iPhone HEIC photos to JPG or PNG?

Yes! You can drop your iPhone or iPad .heic and .heif photos directly into the converter. ToolBuddy decodes HEIC locally and exports them to standard JPG, WebP, or PNG.

Can I resize the resolution of my images while converting?

Yes. In the conversion settings, you can choose 75%, 50%, 25% scaling or set a custom maximum dimension (e.g. max 1920px). The aspect ratio is automatically preserved with high-quality smoothing.

Are there any file limits or subscription fees?

ToolBuddy is 100% free with no sign-up or subscription required. You can process batches of up to 50 files or 1 GB total per run, with individual files up to 100 MB.

Convert Image Online

Fast, free, and secure batch image converter. Convert between WebP, JPG, PNG, GIF, BMP, TIFF, SVG, AVIF, and Apple HEIC with client-side processing, custom resizing, and instant downloads.

100% Client-Side·Batch Conversion (Up to 50 files)·Resize & Compression Controls

Drag & drop images to convert

JPG, PNG, WebP, GIF, BMP, TIFF, SVG, ICO, AVIF or HEIC — up to 50 files

Target Output Format

Select the format your images will be converted to

Currently: WebP

Real-time browser encoding — instant, no waiting in server queues100% Private · Zero file uploads

Image Format Comparison Guide

Not sure which output format to pick? Review the compression strengths, transparency support, and recommended use cases below.

WebPRecommended

Yes (Alpha)

Best for: Modern websites, web apps, and high-speed loading

CompressionLossy & Lossless (25-35% smaller than JPG/PNG)

Compatibility97%+ of modern browsers

JPG / JPEGMost Compatible

No (fills with background color)

Best for: Photographs, email newsletters, and universal sharing

CompressionLossy (adjustable quality & file size)

Compatibility100% universal across all devices

PNGLossless

Yes (Full 8-bit / 24-bit Alpha)

Best for: Logos, screenshots, digital artwork, and transparent graphics

CompressionLossless (zero pixel degradation)

Compatibility100% universal across all devices

GIFAnimation

Yes (Index 1-bit binary)

Best for: Animated clips, simple icons, and legacy web graphics

CompressionLossless (capped at 256 colors)

Compatibility100% universal across all devices

TIFFPrint / Archival

Yes (Uncompressed layers)

Best for: High-resolution desktop publishing, print, and archiving

CompressionUncompressed or LZW lossless

CompatibilityDesktop graphics apps & specialized viewers

BMPRaw Bitmap

Best for: Uncompressed Windows raster bitmaps & legacy systems

CompressionNone (Raw uncompressed pixel map)

CompatibilityUniversal desktop & embedded platforms

Format	Best For	Transparency	Compression	Compatibility
WebPRecommended	Modern websites, web apps, and high-speed loading	Yes (Alpha)	Lossy & Lossless (25-35% smaller than JPG/PNG)	97%+ of modern browsers
JPG / JPEGMost Compatible	Photographs, email newsletters, and universal sharing	No (fills with background color)	Lossy (adjustable quality & file size)	100% universal across all devices
PNGLossless	Logos, screenshots, digital artwork, and transparent graphics	Yes (Full 8-bit / 24-bit Alpha)	Lossless (zero pixel degradation)	100% universal across all devices
GIFAnimation	Animated clips, simple icons, and legacy web graphics	Yes (Index 1-bit binary)	Lossless (capped at 256 colors)	100% universal across all devices
TIFFPrint / Archival	High-resolution desktop publishing, print, and archiving	Yes (Uncompressed layers)	Uncompressed or LZW lossless	Desktop graphics apps & specialized viewers
BMPRaw Bitmap	Uncompressed Windows raster bitmaps & legacy systems	No	None (Raw uncompressed pixel map)	Universal desktop & embedded platforms

Supported Format Conversions

Every format combination below is handled directly inside the Image Converter above. Select any pair to jump straight into converting your files.

How to Convert Images in 3 Easy Steps

1. Select or Drop Images

Drag and drop up to 50 image files from your computer or phone. Supports JPG, PNG, WebP, GIF, BMP, TIFF, SVG, ICO, AVIF, and Apple HEIC.

2. Choose Format & Custom Options

Pick your desired target format (WebP, JPG, PNG, etc.). Optionally resize dimensions (50%, 75%, custom px), adjust quality, or set transparency fill color.

3. Preview & Instant Download

Inspect before/after image sizes, copy directly to your clipboard, and download individual converted images or the entire batch at once.

Key Features of ToolBuddy Image Converter

Instant In-Browser Processing

Conversions run directly inside your web browser via HTML5 Canvas and WebAssembly. No waiting in upload queues.

100% Private & Secure

Your photos never leave your device. Zero server uploads, zero cloud storage, and zero tracking.

Batch Image Conversion

Convert up to 50 images simultaneously with one click. Download all files cleanly in a single action.

Smart Dimension Scaling

Scale images to 75%, 50%, 25%, or constrain to a custom max width/height while converting format.

Transparency Background Control

Converting a transparent PNG or SVG to JPG? Choose white, black, or custom fill to avoid dark backgrounds.

Apple HEIC & Vector SVG

Seamlessly decode iPhone HEIC photos and rasterize SVG vectors to standard web-ready JPG, WebP, or PNG.

Convert Image Online

Target Output Format

Image Format Comparison Guide

Supported Format Conversions

How to Convert Images in 3 Easy Steps

1. Select or Drop Images

2. Choose Format & Custom Options

3. Preview & Instant Download

Key Features of ToolBuddy Image Converter

Instant In-Browser Processing

100% Private & Secure

Batch Image Conversion

Smart Dimension Scaling

Transparency Background Control

Apple HEIC & Vector SVG

Frequently Asked Questions

Explore Related Image Tools

Resize Image

Crop Image

Compress Image

WebP Converter