Screen Recording Upscaler: Sharper Text, No Upload

Open the tool above, drop your screen recording, keep the 4K target and click Start Upscale. The video is processed in your browser, so nothing is uploaded, no sign-up is needed and no watermark is added. When it finishes, download the 4K MP4.

Screen recordings are mostly text, edges and flat color, which is exactly what the upscaler is tuned for. A 1080p recording to 4K is an exact 2x step, and a 720p Zoom or Meet share to 4K is an exact 3x step. Both are whole-number scales, so edges stay clean instead of going soft.

Only partly. If the source was downscaled hard by Zoom or Meet on a weak connection, the pixels are simply gone and no upscaler can recover them. It will look cleaner than a plain resize, but the result still reflects what the call actually sent.

No. If a letter was illegible in the source, it stays illegible after upscaling, only larger and smoother. The tool sharpens edges that already exist, but it cannot invent the pixels that would make a blurry word readable.

No. If your cursor, scroll or animated UI was blurred in the source, upscaling enlarges that blur along with everything else. Trim the blurred part, or re-record at a higher frame rate, rather than expecting the upscaler to remove it.

4K for anything text-heavy: tutorials, code walkthroughs, UI demos, presentations. The gain in text and edge sharpness is visible. Use 1080p if you have a 720p source and only need a Full HD deliverable, because the file is smaller and processing is faster.

Yes. 2560x1440 to 3840x2160 is an exact 1.5x step, the same case covered on the 1080p to 4K page. The gain is smaller than a 2x step, but text and edges still improve over a plain resize.

They are capped to the widest the tool allows, roughly 5120 pixels wide, and the extra is scaled to fit. Ultrawide recordings that go beyond the cap come out slightly narrower than the raw 4K math suggests.

Trim it first with the Video Trimmer. The tool is limited to 3 minutes and 300 MB per file, which is a browser memory limit, not an arbitrary cutoff. Cut the tutorial into 2 to 3 minute segments, upscale each one, and re-join them in your editor if needed.

Yes for MP4 output, and you can switch it off with Keep audio. On the fast engines, audio is re-attached afterwards, and for files over 150 MB it may be skipped, in which case the tool shows a note.

A 4K frame has four times the pixels of a 1080p frame, and screen content is hard to compress because text has very little redundancy. Output often runs at a higher bitrate than the source, so files are usually several times bigger. Use the Video Compressor if you need it smaller.

On a device with WebGPU, a 2 to 3 minute 1080p recording usually takes 1 to 3 minutes to reach 4K. Without WebGPU the tool falls back to the CPU, which is much slower. Trim first, close other tabs, and avoid running 5 or more 4K files at once.

It accepts the output of any recorder that produces MP4, MOV, WebM, MKV or 3GP. That covers OBS, Loom, Zoom local recordings, QuickTime on macOS, Snipping Tool on Windows, ScreenPal and most game-capture tools. MOV from QuickTime works in all modern browsers.

No. The recording is decoded, upscaled and re-encoded in your browser. Open your browser Network tab while it runs and you will see that no request carries your file.

Yes. Up to 10 files per batch and up to 300 MB and 3 minutes per file. For 4K, run 2 to 4 at a time because screen content plus 4K is memory-heavy. The result downloads as one ZIP.

No. The tool tops out at 4K class sizes to keep processing stable in the browser, and it never scales a video down.