What This Image Editor Does
The AixKit Image Editor is a lightweight, browser-based tool for making common image adjustments without installing software. It works entirely in your browser using the HTML5 Canvas API, which means your image is processed locally on your device — nothing is sent to a server.
Here is exactly what it can do:
- Rotate left or right in 90° steps — useful for fixing sideways photos
- Flip horizontally or vertically — mirror an image for creative or practical use
- Adjust brightness — make dark images lighter or reduce glare in overexposed shots
- Adjust contrast — add punch to flat images or reduce harshness in high-contrast ones
- Apply filters — Grayscale, Sepia, or Invert, applied via pixel-level processing
- Download as PNG or JPG — with JPG quality control for file size management
It is designed for everyday edits, not for advanced layer-based work. If you need to remove a background, use the Background Remover tool instead.
PNG vs JPG — Which Format Should You Choose?
The choice of download format affects both quality and file size.
Choose PNG when:
- You need the highest possible image quality with no loss
- Your image has transparent areas (PNG preserves transparency)
- You are going to edit the image again later
- You are saving logos, screenshots, or graphics with sharp text
Choose JPG when:
- You need a smaller file size for web publishing or email
- The image is a photograph (not a graphic or screenshot)
- Transparency is not needed
- You want to control the quality-to-size trade-off with the quality slider
A practical rule: use PNG for graphics, logos, and anything you will edit again. Use JPG for photos you are ready to publish. For most social media uploads and website images, JPG at 85–90% quality is a good balance.
How Brightness and Contrast Actually Work
Understanding what these sliders do helps you use them more precisely.
Brightness
Brightness adds or subtracts a fixed value from every pixel's red, green, and blue channels. Increasing brightness by +50 makes every pixel lighter by the same amount. This is useful for underexposed shots but can wash out colours if pushed too far. A good starting point for a dark image is +20 to +40.
Contrast
Contrast stretches the gap between dark pixels and light pixels. High contrast makes shadows darker and highlights brighter. Low contrast flattens everything toward a middle grey. For flat or hazy images, a contrast boost of +30 to +60 typically restores a natural look. Pushing contrast above +80 can create a harsh or posterised result in most photos.
Using them together
A common edit sequence for a dim photo: raise brightness by +20 to lift shadows, then raise contrast by +30 to restore depth. This avoids the washed-out look that comes from brightness alone.
Best Edits for Common Use Cases
Product photos for online stores
- Brightness +15 to +25 to lift the subject against a white background
- Contrast +20 to add definition to edges and texture
- Download as JPG at 90% for a fast-loading product image
- Rotate to correct orientation if the photo was taken in portrait mode
Social media images
- Contrast +30 to +50 for a punchy, scroll-stopping look
- Try Grayscale for a clean editorial feel, or Sepia for a warm, nostalgic tone
- Download as JPG at 85–90% to keep file size low for fast loading
Blog graphics and header images
- Brightness −10 to −20 on very bright images to reduce glare
- Contrast +20 for a professional, editorial appearance
- Download as PNG if the image contains text overlays or sharp graphic elements
Scanned documents and photos
- Contrast +40 to +70 to make scanned text or detail sharper
- Brightness +10 if the scan looks slightly grey rather than white
- Rotate if the scan was placed sideways on the scanner
Common Mistakes to Avoid
- Over-brightening: Pushing brightness above +60 on an already bright image flattens colours and loses detail in highlights. Use small steps and check the result.
- Extreme contrast: Values above +80 can cause banding and hard transitions that look unnatural. For most images, +20 to +50 is enough.
- Downloading JPG repeatedly: Every time you save a JPG, the compression runs again and quality degrades. If you plan to edit an image multiple times, keep a PNG as your working copy and only export to JPG for final use.
- Ignoring orientation before editing: Rotate the image to the correct orientation before adjusting brightness and contrast. Sliders work the same regardless of rotation, but it is easier to judge results when the image is the right way up.
- Applying Invert without intent: The Invert filter reverses every colour channel, creating a photographic negative effect. It is useful for specific creative purposes but rarely gives a natural-looking result on photos.
Why Browser-Based Editing is Useful
Privacy
When editing happens in the browser using the HTML5 Canvas API, your image data never travels over the internet. This matters for images containing personal information, sensitive documents, or proprietary product designs. No account is required, and nothing is stored.
Speed
There is no upload or download round-trip. Adjustments apply in real time as you move the sliders. For quick tasks — rotating a photo, boosting contrast, converting to grayscale — a browser editor is often faster than opening desktop software.
No installation
Browser-based tools work on any device with a modern browser. There is nothing to install, update, or license.
Honest limitations
Browser-based editors are not a replacement for professional tools when you need layers, masking, colour profiling, or RAW file support. For everyday quick edits, they are a practical and private choice.
Related Tools
- Background Remover — Remove the background from any photo. Useful before or after basic editing.
- AI Image Restore — Enhance and restore old or low-quality photos.
Frequently Asked Questions
Is my image uploaded to a server when I edit it?
No. All editing runs in your browser. Your image is never sent to AixKit's servers or any external service. The HTML5 Canvas API processes everything locally on your device.
What file formats are supported?
You can upload JPG, PNG, and WebP images up to 10 MB. You can download the result as PNG or JPG.
Why does the quality slider only appear for JPG?
PNG is a lossless format — its quality cannot be reduced by compression. The quality slider controls JPG compression, where a lower value produces a smaller file with visible compression artefacts and a higher value produces a larger, cleaner file.
Can I undo individual edits?
The Reset All button returns the image to its original uploaded state. Individual undo steps are not available. If you want to compare edits, keep the original image file and re-upload it as needed.
Will the editor work on mobile?
Yes. The editor is responsive and works on phones and tablets. Tap "Choose Image" to open your device's photo library. The toolbar and sliders are touch-friendly.
Can I edit transparent PNGs?
The editor can load transparent PNG files. The canvas preserves the alpha channel (transparency) when downloading as PNG. Transparency is lost if you download as JPG, because JPG does not support transparent areas.
Why does my image look different after applying Sepia or Grayscale and then adjusting brightness?
Brightness and contrast adjustments are applied first in the pixel pipeline, then the filter is applied. If you increase brightness and then switch to Grayscale, the brighter pixel values are what get converted to grey. This is the expected behaviour — adjust brightness first, then check filters.
Is there a file size limit?
The maximum upload size is 10 MB. Very large images (above 4000×4000 pixels) may be slower to process because every pixel is handled individually in the browser. For most photos taken on a phone or camera at standard settings, processing is near-instant.
