Convert negatives without installing anything

6 September 2026 · 4 min read · Fran Yitani

What converting a negative really is

Converting a negative is not “inverting the image”. Inverting is the easy part; the hard part comes before and after. Before: removing the orange mask, which is not a uniform tint and does not go away with a single adjustment. After: finding where the real black and white are and spreading what is left without crushing the shadows or blowing the highlights. And all of that the same way for the 36 frames of a roll, which were developed together and have to look like the same film.

It can be done by hand, with per-channel curves in any editor: it is the best way to understand what is going on, and the worst way to do it with a roll, because every frame comes out with a different balance and by the third photo they no longer look like the same roll. And there are other tools that automate it: plugins for paid editing programs, desktop programs, free software. All of them require installing something, and many also require the host program and its subscription. Here is the other way.

What Negative Archive Capsule Lite does

Negative Archive Capsule Lite is the conversion done inside the browser, with the same engine as the Negative Archive Capsule desktop app. What you find when you drop a negative:

• The positive, colour and all. The orange mask gone and the inversion done, without touching anything.
• The roll as a roll. The photos of the same strip come out with one look, and whatever you adjust on one can be copied to all of them.
• Automatic white balance on opening, an eyedropper to point at what should be grey, and the usual dials: exposure, contrast, highlights, shadows, warmth, saturation.
• A minilab with the controls of a real minilab — cyan, magenta, yellow, density — and a before/after curtain to see what you have done.
• Export at your file's full megapixels, no watermark, one photo or the whole roll at once.

What it does not ask of you

To install anything. It opens on Mac, Windows, Linux or iPad, in any modern browser. There is no download, no version, no “system requirements”.

An account. There is no sign-up. If you buy a package you get a key by email, you paste it and that is it. Nothing more.

A subscription. One negative of your own is free, in full, with every dial. After that, a pack of 12 is €3.90 and one of 40 is €7.90: €0.33 and €0.20 per negative, one-off payment, no expiry. There is a monthly plan for whoever has a box of rolls waiting, and it can be cancelled whenever you like. No paying for an editing program's subscription to develop ten rolls.

Your photos. This is what matters most to me. The photo does not leave your device: the file opens in your browser, is converted in your browser and is saved to your disk. There is no image server, no copy, nothing to delete afterwards. And you can check it yourself: open the browser's developer tools, “Network” tab, and drop a negative. At most you will see your key being checked and a visit counter with no image in it. The page's security policy makes it the browser itself that prevents your photos from being sent anywhere else.

What it does ask of you

A well-made photo of the negative. Negative Archive Capsule Lite works with 8-bit JPEG and PNG, and in 8 bits the negative has to arrive with all three channels intact: that is achieved in the camera, with the white balance set on the orange base. A badly balanced JPEG arrives without blue, and no tool recovers that blue, this one included. With the photo well made, the result holds up; with the photo badly made, the site tells you when you drop it instead of pretending nothing is wrong. The capture guide explains it step by step.

How it goes, in three steps

1. Drop the photos of the negatives into the darkroom (or hit “Sample photo” to see it with a negative of mine).
2. Look and adjust. The conversion comes out on its own; if you want, move the dials, point at a grey with the eyedropper or use the minilab. Whatever you do on one photo can be copied to the whole roll.
3. Export. A clean JPEG, at full resolution, or the whole roll at once.

And when you want more

The website is the front door. The desktop app reads RAW directly, with its 14 bits — the blue is never missing there — and adds what a browser cannot: a catalogue per roll, tags and search, dust removal, masks, contact sheets and tethered shooting. Same engine, same judgement, without depending on any other program.

But that comes later. Now, one negative of your own, free, and you see it with your own eyes.