ToolBench Image Converter

What It Does

ToolBench Image Converter is a privacy-first, browser-based image conversion utility that processes files entirely on your device. It supports all major formats—JPG, PNG, WebP, AVIF, GIF, BMP, TIFF, ICO, and PDF—with no server uploads, no file size limits, and no sign-up required. Simply choose your files, set the output format, adjust quality or dimensions per file, and convert in one batch.

Who It's For

Designers, photographers, marketers, and anyone who needs to quickly convert images for web use, social media, or printing without compromising privacy. Perfect for users who want control over quality settings and transparency handling without the overhead of desktop software.

Key Features & Capabilities

• Multi-format support: Convert to and from JPG, PNG, WebP, AVIF, GIF, BMP, TIFF, ICO, and PDF
• Batch processing: Convert multiple files at once, each with its own output format and quality setting
• Per-file controls: Adjust quality, resize on-the-fly, and set maximum width per image
• Transparency handling: Converts transparent pixels to white (not black) when moving to formats like JPG that don't support alpha channels
• Zero upload, zero storage: All conversion happens in your browser using the Canvas API—files never leave your device
• No limits: Process unlimited files of any size; only constrained by your device's capabilities
• Social media presets: Integrated resizer for Instagram, YouTube, Twitter/X, Facebook, LinkedIn, and more
• DPI converter: Change print resolution (72, 100, 150, 200, 300, 600 DPI)
• Aspect ratio tools: Easily convert to 16:9, 4:3, 1:1, and other common ratios

Typical Workflows

Convert a batch of HEIC photos from your iPhone to JPG for sharing. Compress and convert PNGs to WebP for a faster website. Turn transparent logos into white-matted JPGs for email signatures. Resize social media images to exact platform specs while converting format. Generate favicons by converting square images to ICO.

What Sets It Apart

Unlike cloud-based converters, ToolBench never uploads your files. There's no server processing, no tracking, and no file count or size caps. You can disconnect from the internet after the page loads and continue working. The tool also handles transparency intelligently and offers granular, per-file quality and resize controls in a single batch—features typically reserved for desktop software.