Image Color Inverter
Invert image colors or create a photographic negative
Image Color Inverter — what it does
Invert every colour in an image, turning it into its photographic negative: light becomes dark, and each channel is replaced by its complement. The same one-click operation turns a scanned film negative into a positive image, and flips a light-background diagram into a dark-mode-friendly one.
When this tool helps
- Converting a scanned film negative into a viewable positive picture.
- Adapting a black-on-white diagram for a dark presentation or dark-mode documentation.
- Checking a design's contrast structure by viewing it with tones reversed.
How to use it
- Choose the image.
- Process the inversion.
- Review the negative preview.
- Download the inverted image.
Accuracy, limits, and good practice
- Inverting a diagram flips its colours as well as its tones, so brand colours come out as their complements — recolour those by hand afterwards.
- Film negatives also carry an orange base mask, so a straight inversion gets you most of the way but not to accurate colour.
- Inversion is its own inverse: run it twice and you are back to the original image.
- Inverting a chart before a dark-mode screenshot is a shortcut, not a design: redraw it properly if the image is going into a published document.
Frequently asked questions
Does it invert transparency?
No, the alpha channel is left alone; only colour values are complemented, so transparent areas stay transparent.
Is any quality lost?
The operation is mathematically exact per pixel; any loss comes from the format you export to, not from inverting.
How do I make just a dark version of a logo?
Inversion changes hues too. For a logo, edit the colours directly or export a dark variant from the source file.
Why does an inverted photo look strange?
Skin tones and skies invert into colours the eye has no reference for, which is why negatives read as unnatural rather than merely dark.
Related tools on this site
- Batch Image Compressor — Compress multiple images and download them as a ZIP
- Image Border & Shadow — Add padding, border, and a soft shadow around an image
- Image Grid Splitter — Split one image into equal rows and columns
Everything above runs inside this page. Image Color Inverter needs no account, no upload, and no server round trip — close the tab and nothing is left behind.
圖片色彩反轉能做什麼
反轉圖片中的每個顏色，讓它變成攝影負片：亮變暗，每個通道都換成互補值。同一個一鍵操作，既能把掃描的底片負片轉成正像，也能把白底圖表翻成適合深色模式的版本。
什麼時候用得上
- 把掃描的底片負片轉成看得懂的正像照片。
- 把黑字白底的圖表改成適合深色簡報或深色文件的版本。
- 以反相檢視設計的對比結構是否成立。
使用步驟
- 選擇圖片。
- 執行反轉。
- 檢視負片預覽。
- 下載反轉後的圖片。
精確度、限制與實務建議
- 反轉圖表會同時翻掉顏色與明暗，品牌色會變成互補色，這部分請事後手動改回。
- 底片還有橘色片基遮罩，單純反轉能做到七八成，但無法得到準確色彩。
- 反轉是自身的逆運算：做兩次就回到原圖。
- 為了深色模式截圖而反轉圖表是權宜之計、不是設計：圖片要放進正式文件時，請重新繪製。
常見問題
透明度會被反轉嗎？
不會，alpha 通道保持不變，只有顏色值取互補，透明區域仍然透明。
會損失畫質嗎？
逐像素運算在數學上是精確的；任何損失來自你匯出的格式，而非反轉本身。
只想做商標的深色版怎麼辦？
反轉會連色相一起改。商標請直接編輯顏色，或從原始檔匯出深色版本。
反轉後的照片為什麼看起來很怪？
膚色與天空反轉成眼睛沒有參照的顏色，所以負片看起來不只是變暗，而是不自然。
本站相關工具
以上步驟全部在這個頁面內完成，圖片色彩反轉 不需要註冊、不上傳檔案、也不經過伺服器，關閉分頁後不會留下任何資料。