Image Brightener - Fix Dark Photos Online Free
Instantly brighten dark photos without losing quality. Convertft provides a secure, privacy-focused tool to adjust brightness and contrast in batch. No registration required. Perfect for JPEG, PNG, WebP,AVIF, HEIC, AVIF, and GIF!
Drag & Drop or Click
Support JPG, PNG, WEBP, GIF, AVIF
Max file size: 50MB
Why Use This Image Brightener - Fix Dark Photos Online Free? (Key Benefits)
Smart Batch Processing
Brighten 50+ photos at once including HEIC and AVIF. Save time with our optimized parallel processing engine.
Privacy & Security First
Your photos are processed with high-level encryption and auto-deleted from our servers within 1 hour. No tracking, no storage.
Lossless Detail Enhancement
Our intelligent algorithm lightens dark areas while preserving details and minimizing noise, even for 4K high-res images.
How to Use This Image Brightener - Fix Dark Photos Online Free?
Select Image
Select the image you want to brighten and upload it to the cloud. To batch brighten multiple photos, click Choose More Files to upload additional photos. The cloud will automatically adapt to and support common image formats, so you don't need to worry about compatibility.
Customize Settings
Clicking the Start Process button for a specific photo will only brighten that one image. To brighten all selected images, click the Start Process > button. If you want to readjust the brightness parameters, click the X button to reset this processing.
Download Brightened image
Once the cloud indicates that the brighten is complete, you can preview the results by clicking on the images. Click Download Image to download a single brightened photo, or click Download Images to download all batch brightened images.

Our Security & Privacy Pledge
Your data security is our highest priority. We will never retain your files longer than necessary for processing.
Automatic Deletion
Your files are permanently and automatically erased from our servers after 60 minutes, with no backups retained.
Secure Transmission
All uploads and downloads are protected using 256-bit SSL/HTTPS encryption for complete data security.
Zero Human Access
Files are handled exclusively by our automated processing engine; no manual viewing or review occurs.
Never Share or Sell
We commit to never selling, renting, or sharing your content or personal data with any third parties or advertisers.
User-Controlled Deletion
You have the option on the download page to select "Clear Immediately" to destroy your files instantly.