Image brightness and contrast editor
Preview exposure, brightness and contrast adjustments.
วิธีใช้ Image brightness and contrast editor
The Image brightness and contrast editor takes one image and returns a PNG with your brightness and contrast settings applied at the original pixel dimensions. Both controls are percentages from 0 to 300, where 100 leaves the image unchanged, lower values darken or flatten it and higher values brighten or add contrast. The defaults start at 110%.
- Choose a source file. If the tool accepts multiple files, arrange them in the order you want.
- Set brightness (%), contrast (%).
- Run image brightness and contrast editor, review the output, then use the available copy or download controls.
ความสามารถของเครื่องมือนี้
Preview exposure, brightness and contrast adjustments.
- Brightness (%)
- Range: 0 to 300
- Contrast (%)
- Range: 0 to 300
ข้อจำกัดและการประมวลผล
Images use the existing 32-megapixel canvas bound. Up to 100 source images are allowed where supported. Pasted HTML is bounded to 200,000 characters; Mermaid diagrams to 20,000 characters and 300 lines. SVG and PNG generation require a browser.
คำถามที่พบบ่อย
What do the brightness and contrast percentages mean?
Both settings work as percentages of the original. 100% leaves the image unchanged, 0% brightness turns it black, 0% contrast turns it flat gray, and values up to 300% brighten or increase contrast. They are applied together as canvas filters.
Will adjusting brightness change my image size or format?
The pixel dimensions stay the same as the source image. The adjusted result is always exported as a PNG file, even if you started from a JPEG or another format the browser can open.
How do I brighten a dark photo without losing too much detail?
Start with a moderate brightness value such as 120% to 140% and raise contrast slightly to keep shadows defined. Very high values push light areas to pure white, and those clipped highlights cannot be recovered later from the exported PNG.
Where is my input processed?
This operation processes its source in your browser. Copy and download are explicit actions; source input is not saved in an account or history.
What are the input limits?
Images use the existing 32-megapixel canvas bound. Up to 100 source images are allowed where supported. Pasted HTML is bounded to 200,000 characters; Mermaid diagrams to 20,000 characters and 300 lines. SVG and PNG generation require a browser.