Private AI image workspace
Perfect color, in real time.
Color correct a private PNG with live brightness, contrast, saturation, and temperature controls, auto enhance in one tap, and download a validated private PNG.
Free workspace
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One valid correction costs 2 credits. Failed work releases its reservation.
How it works
One source, one private PNG.
Provider settings stay server-side. SimilarPNG owns pricing, routing, validation, retention, and credit reconciliation while you control the source and every adjustment.
- 01Choose a private PNGDrop one PNG. The browser previews it before upload and never publishes it.
- 02Dial in the lookMove brightness, contrast, saturation, and temperature, or tap Auto enhance for an instant fix.
- 03Preview, then applyWatch the real-time preview, then spend credits once for a validated private PNG.
Frequently asked questions
Before you process
How do I color correct a photo online?
Upload one private PNG, then move the Brightness, Contrast, Saturation, and Temperature sliders while a real-time preview shows the result. When it looks right, apply the correction once and SimilarPNG returns a validated private PNG. No software install is required.
What does Auto enhance do to an image?
Auto enhance measures the darkest and brightest tones in your image and stretches the tonal range between them, which recovers flat or hazy photos automatically. It is applied equally across the red, green, and blue channels so brightness and contrast improve without shifting the colors.
Can I adjust brightness, contrast, and saturation online at the same time?
Yes. Each of the four controls runs from -100 to +100, centered at zero, and they combine in a single pass: Auto enhance first, then brightness, contrast, saturation, and temperature. The live preview updates instantly so you can balance them together before spending any credits.
How do I fix photo colors for free?
Warm or cool a photo with the Temperature slider to correct a color cast, lift dull images with Contrast and Saturation, and rescue underexposed shots with Brightness or Auto enhance. You preview every change for free, and a valid corrected PNG costs a small, clearly shown credit amount.
Is the color correction preview accurate, and does SimilarPNG keep my image private?
The in-browser preview applies the exact same math the server uses, so it closely matches the delivered PNG, and the server render is always authoritative and validated before any credit settles. Your source and result stay private, are reachable only through owner-scoped preview and download routes, and expire under your account's retention policy.