Image Converter & Compressor User Guide

Welcome to the ToolBayan Image Converter & Compressor User Guide! Learn how to convert images between popular formats, compress image files to reduce file size, customize quality parameters, and safely handle batch operations.

1. Purpose

The Image Tools utility provides office administrators, graphic designers, government applicants, and web professionals with an all-in-one image transformation utility. It helps you prepare image files to meet strict portal upload requirements (such as government portals capping uploads at 1MB or 2MB) or optimize graphics for lightweight web and email delivery.

2. Features

• Convert & Compress Modes: Seamlessly switch between format conversion and file size compression.
• In-Browser & Server Fallback Processing: Supported formats compress locally in your browser for 100% privacy and zero server latency, with an automatic server-side fallback engine for deep compression and non-browser formats.
• Multiple Supported Formats: Convert between JPEG, PNG, WebP, BMP, ICO, JFIF, and AVIF formats.
• Adjustable Compression Quality: Fine-tune JPEG, WebP, and PNG compression levels with visual percentage feedback.
• Actual Size Savings Tracking: Calculates exact byte reductions and percentage savings based on the actual processed file size.
• Before & After Preview: Compare original and compressed images side-by-side or inspect dimensions and format tags before downloading.
• Single & Batch Processing: Download individual processed assets or package entire queues into a single consolidated ZIP file.

3. Step-by-Step Usage

Mode A: Compressing Images (Reduce File Size)

1. Select Compress Mode: Click the Compress Image tab at the top of the tool.
2. Upload Images: Drag and drop your image file(s) into the upload drop zone, or click Browse Files.
3. Set Compression Quality:
   • Choose a preset: Balanced (80%) (Recommended), High Quality (90%), or Maximum Compression (60%), or adjust the slider manually.
4. Choose Format Strategy:
   • Keep Original Format (default) to preserve your current file extension, or choose WebP for greater compression efficiency.
5. Execute Compression:
   • Click Compress Image. The tool computes the optimized file locally or via the secure server fallback.
6. Inspect Reduction & Download:
   • Review the actual size reduction in KB/MB and percentage.
   • Click Download Compressed Image or Download All as ZIP.

Mode B: Converting Images (Change Format)

1. Select Convert Mode: Click the Convert Image tab.
2. Upload Images: Drop or browse your images into the queue.
3. Choose Target Format: Select your desired output format (JPEG, PNG, WebP, BMP, ICO, JFIF, or AVIF).
4. Configure Quality & Resizing (Optional):
   • Adjust format-specific quality sliders or specify custom pixel widths/heights.
5. Convert & Download: Click Convert Images to process the queue and download your files.

4. Tips & Best Practices

• Government Portal Caps: Civil service, PRC, and DFA portals often reject pictures over 1MB. Setting compression quality to 80%–85% typically reduces file size by 60%–80% with virtually zero perceptible visual difference.
• Preserving PNG Transparency: If your image contains a transparent background (e.g. digital signatures or logos), keep the PNG format or select WebP to retain the alpha channel. Converting transparent images to JPEG will place them on a clean white background.
• Compressed Output Larger than Original?: If an image has already been heavily compressed by a smartphone or camera algorithm, re-compressing it at a high quality setting (e.g. 95%) can occasionally produce a slightly larger file. If this happens, ToolBayan alerts you immediately and recommends lowering the slider or keeping your original file.

5. Security & Privacy Assurance

• Zero Permanent Storage: ToolBayan never permanently stores, indexes, or sells user images.
• Local Browser Execution: Whenever possible, compression runs 100% inside your device's browser memory via HTML5 Canvas.
• Transient Server Purging: When server fallback processing is used, temporary files are kept strictly in transient directories and automatically purged within 1 hour.