Sincron Screen ToolsWindows app

We kept taking screenshots and explaining in writing where to look.

We built an app that translates, summarizes and lets you annotate anything that appears on your screen, exactly where it is. This page isn’t the sales pitch. It’s the story of why we decided to build it this way.

Sincron Screen Tools · screenReading the selection
  1. 1Cropped
  2. 2Translated
  3. 3Annotated
CaptureSent
What it is

Before the story, what it actually is.

One factual paragraph, so nobody has to guess what we’re talking about.

Sincron Screen Tools is a Windows app that acts on the screen itself. You drag a selection over any part of it and can translate the text there (even inside an image), ask for an explanation of that passage, draw on top of it or turn the selection into a presentable screenshot. Each action is a shortcut, and it works in a browser, a PDF, a spreadsheet, a video call, an internal system or a game.

The pain we saw

The content that matters most is the part you can’t select.

Charts, tables inside PDFs, internal systems, the screenshot a client sent. All text, none of it selectable.

We noticed it while trying to pass things along internally. The browser’s translator skips right past the figure that was the point of the document, because it doesn’t read text inside images. So whoever needed that chart in another language was left exactly where they were: looking at content they know is important and can’t read.

The second half of the problem shows up when you have to explain it to someone else. The usual route is to take a screenshot, paste it into the chat and write “look up here on the right,” hoping the other person finds it. It works badly and takes up two people’s attention. When the subject is technical, the whole explanation depends on the other person looking at the right part of the image.

Put the two together and the cost is an explanation redone every time someone new needs the same information. None of these costs shows up in an activity report, which is exactly why they last so long.

The decisions we made

Three choices that made our lives harder on purpose.

Each one had an easier path available. It’s worth explaining why we didn’t take any of them.

01 · Where to act

On the screen, not inside a program

The simple way out was a browser extension. It would solve a big slice of the problem and be much easier to build. We ruled it out because the slice that’s left is exactly the one that hurts: a PDF open in a reader, a spreadsheet, an internal system, a screen shared on a call. We chose to act on whatever is rendered. The price is that the app knows nothing about the document’s structure. It only sees pixels, and that forced the next decision.

02 · How to return it

The translation appears where the text was

The easy route would have been to return a block of translated text in a window on the side. But text without position destroys what made that content useful: a table stops being a table, labels come loose from the axis, the legend loses its reference. So the translation is placed over the detected blocks, in the same position as the original, with the source language detected automatically. It took a lot more work, and that’s why the result still makes sense.

03 · How to use AI

Letting the answer admit it’s unsure

A language model reading a bad image makes up numbers as confidently as it gets them right, and a summary that makes things up is worse than no summary at all. We made the summary state its uncertainty when the contrast swallows a line. As for where the AI runs, the choice is yours: a local model with no internet, your own key, or credits managed by Sincron on the AI Pro plan. Sincron doesn’t store any captures.

Where it stands, honestly

What works today and what doesn’t yet.

A stated limit is worth more than a superlative, especially in a narrow-scope app.

What works

Translation anchored to the original text, a summary of the selection, live annotation on the screen with pen, highlighter, arrow, rectangle and text (the program underneath keeps working), and a screenshot studio that adjusts margins, corners, shadow and background, then copies or saves to PNG in two clicks. Capture, drawing and the studio work without any AI key at all. Free use has no expiration date, with a daily limit per action.

What doesn’t

It doesn’t put the tutorial together for you. Each capture is one piece; the sequence, the order and the text that ties it all together are still your job. Zoom, recording and timer are outside the MVP: the stated focus is capture, annotation and visual understanding. And today it’s Windows 10 and 11, and the macOS version has been announced as next, with no date.

The trade-off you inherit

Because the app acts on pixels, reading quality depends on what’s on the screen. Small text, low contrast or a bad scan degrade the result, which is why the summary was built to warn you instead of smoothing things over.

Sincron Screen Tools came out of Sincron IA, the same team that builds process automation into client operations. When the bottleneck is bigger than one tool can solve, the path is the Discovery stage.

Want to see the actual product?

The download, the plans and the full feature list are on its website. This text was only meant to explain why it exists.