Skip to main content

Image Compressor - Free Desktop App

Watch Demo Video - 30 seconds

Compress unlimited images offline. Batch process thousands in seconds. Supports JPEG, PNG, WebP, GIF, BMP. No upload, works offline.

Free β€’ No Signup Required
Works 100% Offline β€’ No Internet Required
No Upload β€’ 100% Privacy β€’ Files Stay Local

Compress Your Images

85%

You'll save up to 2.8MB

We'll compress your images to an estimated 847kB - 1.2MB. That's up to 70% smaller than the original 4MB file.

Note: PNG compression is limited due to lossless nature

Why Desktop Image Compressor Beats Online Tools

Feature TinyJPG / iLoveIMG Diwadi Desktop
Upload Required ❌ Required 🎯 Never
File Size Limit ❌ 50MB max ♾️ Unlimited
Speed ⏳ Slow (upload/download) ⚑ Instant
Batch Processing ❌ 1 file βœ… 1000s
Privacy ⚠️ Risky (cloud upload) πŸ”’ 100% Local
AI Features ❌ No πŸ€– Yes
Offline ❌ No βœ… Yes
Cost Free Free βœ…

See the Difference

Real compression results from Diwadi. Same images, dramatically smaller files.

Landscape Photo 78% smaller
Original
3.8 MB
Compressed
820 KB
Quality: 75%
Product Photo 79% smaller
Original
5.2 MB
Compressed
1.1 MB
Quality: 80%
Screenshot (PNG→JPEG) 91% smaller
Original
4.1 MB
Compressed
390 KB
Quality: 70%

How It Works

1

Download & Install

Takes just 30 seconds. No account, no credit card required.

2

Browse & Select Your Images (JPEG, PNG, WebP, GIF, BMP)

Navigate your files like a regular file browser. Batch processing supported.

3

Get Compressed Images (Instant)

Processing happens locally on your computer. No upload wait.

Compress Images to Target Size

Need to meet a specific file size requirement? Here are the most common target sizes for image uploads and how to hit them in Diwadi.

50 KB

Government Forms & ID Photos

Visa applications, passport uploads, and government portals often enforce a strict 50KB limit. Resize to 600x600px and use low quality settings.

Set quality to 20-40%. Resize to 600x600px first.

100 KB

Job Portals & Applications

Most online job portals, university submissions, and exam registrations require photos under 100KB. Works well for headshots and document scans.

Set quality to 40-60%. JPEG format works best.

200 KB

Web & Blog Images

The sweet spot for web images. Fast loading on mobile, good visual quality, and well within most CMS upload limits. Ideal for blog posts and articles.

Set quality to 60-75%. Consider converting to WebP.

500 KB

Social Media & Email

Works for Instagram posts, Facebook uploads, and email attachments. Maintains sharp details in product photos and graphics.

Set quality to 75-85%. Great for product photography.

1 MB

High-Quality Sharing

Perfect for client delivery, portfolio images, and presentations. Retains excellent quality while being easy to share via email or cloud storage.

Set quality to 80-90%. Best for professional work.

2 MB

Print & Large Displays

Suitable for images destined for print materials, large screen displays, or high-resolution slideshows where quality matters most.

Set quality to 85-95%. Preserves fine details.

Diwadi shows you the estimated output size before compressing. Adjust the quality slider until you hit your target β€” no guesswork needed. All processing happens locally on your device.

Format-Specific Compression Guide

Not all image formats compress equally. Here's how Diwadi handles each format and our recommendations for best results.

Format Compression Quality Control Recommendation
JPEG βœ… YES
(capped at 75)
βœ… YES Use 50-65
Best format for compression
PNG ⚠️ LIMITED ⚠️ Lossless only Convert to JPEG
For better compression
WebP ❌ NO ❌ Ignored Avoid or convert
Compression not supported
BMP ❌ NO ❌ N/A Convert to JPEG/PNG
Uncompressed format
GIF ❌ NO ❌ N/A Don't compress
Use for animations only
πŸ’‘

Pro Tips:

  • JPEG: Works best with compression. Use quality 50-65 for significant size reduction.
  • PNG: Lossless format - compression is limited. Convert to JPEG if you don't need transparency.
  • WebP, BMP, GIF: Compression not supported. Convert to JPEG/PNG or leave unchanged.

Image Compression Guide

Everything you need to know about reducing image file sizes without sacrificing quality.

Lossy vs Lossless Compression

Image compression falls into two categories. Lossy compression removes data that the human eye barely notices β€” it produces dramatically smaller files (50-80% reduction) with minimal visible quality loss. JPEG is the most common lossy format. Lossless compression preserves every pixel perfectly but achieves modest size reduction (10-30%). PNG uses lossless compression, which is why PNG files are often much larger than JPEGs of the same image.

Choosing the Right Quality Setting

The quality slider in Diwadi controls how aggressively JPEG compression removes data. Here's a practical guide:

A+

90-100%: Nearly identical to original. Best for archival or print. Saves 10-30%.

A

70-85%: Excellent for most uses. No visible difference at normal viewing distance. Saves 40-60%.

B

50-65%: Good for web images, email, and social media. Minor artifacts on close inspection. Saves 60-75%.

C

Below 50%: Noticeable quality loss. Use only when file size is critical (form uploads, thumbnails).

Best Practices for Image Compression

  • 1

    Start with the highest quality you can tolerate and work downward. You can always re-compress from the original, but you cannot recover lost quality.

  • 2

    Use JPEG for photographs and images with gradients. Use PNG only when you need transparency or pixel-perfect accuracy (logos, screenshots, diagrams).

  • 3

    For web publishing, WebP offers 25-35% smaller files than JPEG at the same visual quality. Convert your images to WebP using Diwadi's format converter.

  • 4

    Resize before compressing. A 4000x3000 photo compressed to 80% is still larger than a 1920x1080 version compressed to 85% β€” and the smaller one looks sharper on screen.

Why Choose Diwadi Desktop?

πŸ”’

Privacy First

Files never leave your computer. No cloud upload, no data collection, 100% local.

⚑

Lightning Fast

Process files 10x faster than online tools. No upload wait, no download wait.

♾️

No Limits

Convert unlimited files of any size. Batch process thousands in one click.

πŸ€–

AI-Powered

Smart formatting detection, auto-cleanup, better accuracy.

πŸ’»

Works Offline

No internet required. Perfect for flights, secure environments.

πŸ†“

Free to Use

No trial limits, no watermarks, no credit card required.

Frequently Asked Questions

Is Diwadi image compressor really free?

Yes! Diwadi's image compression is completely free with no limits on file count, file size, or usage. Compress unlimited images with no watermarks and no credit card required. Free.

Do I need to upload my images?

No! Unlike online compressors, Diwadi processes everything locally on your computer. Your images never leave your device, ensuring complete privacy. This is especially important for sensitive images like product photos, personal photos, or client work.

What image formats are supported?

Diwadi supports JPEG, PNG, WebP, GIF, and BMP formats. You can compress images in their original format, maintaining compatibility while significantly reducing file size.

Which image formats compress best?

JPEG compresses best. JPEG compression works excellently with quality settings of 50-65 for significant size reduction. PNG has limited compression because it's lossless - if you don't need transparency, convert PNG to JPEG for better results. WebP, BMP, and GIF formats don't support compression in Diwadi, so consider converting them to JPEG or PNG first.

How many images can I compress at once?

Unlimited batch processing. Select 10, 100, 1000, or even 10,000 images and compress them all in one operation. Unlike online tools that limit you to 20-50 images at a time, Diwadi handles any number of images.

Will compression reduce image quality?

You choose! Diwadi offers lossless compression (no quality loss, smaller size), lossy compression (significant size reduction, minimal visible quality loss), and custom settings. Most users choose lossy at 80-90% quality - nearly identical visually but 50-70% smaller files.

How do I compress an image to 100KB or less?

In Diwadi, set the JPEG quality slider to 40-60% for most images to reach 100KB. For larger photos (10MP+), try 30-50%. If the image is still too big, consider resizing it to smaller dimensions first. Diwadi shows you the estimated output size before compressing, so you can adjust the quality slider until you hit your target. For non-JPEG formats, convert to JPEG first for the best compression.

Can I compress an image to 50KB for forms or ID photos?

Yes. Many government forms, visa applications, and job portals require images under 50KB. In Diwadi, set the quality slider to 20-40% and resize the image to 600x600 pixels or smaller. JPEG format works best for this. Diwadi processes everything locally, so your ID photos and personal documents never leave your computer β€” important for sensitive uploads.

How do I compress images to a specific file size (200KB, 500KB, 1MB)?

Diwadi's quality slider gives you direct control over output size. For a rough guide: quality 80-90% typically produces files around 500KB-1MB, quality 60-75% gets you to 200-500KB, and quality 40-60% reaches 100-200KB. Results vary with image dimensions and content. Adjust the slider and check the size estimate shown in the app before compressing. For batch processing, the same quality setting applies to all images at once.

How is offline compression faster than online tools?

No upload/download time. Online tools require uploading images (slow for large batches), processing, then downloading results. Diwadi compresses instantly on your computer using your GPU/CPU. For 100 images, online tools take 5-10 minutes; Diwadi takes 10-30 seconds.

Does it work offline?

Yes! Diwadi works completely offline, perfect for travel, flights, or locations with poor internet. No connection required for image compression.

Is it available for Mac and Windows?

Yes! Diwadi supports macOS and Windows. Download the version for your operating system and start compressing images in 30 seconds.

Can I compress images for web use?

Absolutely! Diwadi is perfect for web optimization. Compress product photos for ecommerce, blog images, social media graphics, or website assets. Convert to WebP for the best web performance. Batch compress your entire image library in one go.

Is my data safe with Diwadi?

100% safe. All processing happens locally on your computer. We don't collect, store, analyze, or transmit your images. What you compress stays on your computer. No cloud, no tracking, complete privacy.