Frog — The Complete Guide: Copy Text from Anywhere on Your Linux Screen
Frog, from Tender Owl, is a simple Linux desktop app installed through Flathub or the Snap Store. The licence is MIT, there is no sign-up, and you can use it for commercial work too.
Frog
Tender Owl
Small free Linux app that extracts text from anything on screen — images, videos, websites and documents — and reads QR codes.
Get it from the vendorWhat you get
- Region capture — select part of the screen and its text is recognised.
- Straight to the clipboard — paste it at once into a spreadsheet or report.
- Any source — images, videos, websites and scanned PDF documents.
- QR codes — decode them from the screen without a phone.
- A minimal interface — no complicated settings.
Who it suits — and what it does not do
Frog suits an engineer working on Linux who wants to copy a value from a data sheet, a line from a scanned standard or an error message from a software screenshot. It is a quick-capture tool, not a batch processor for whole documents, and it runs on Linux only. The latest release was published more than a year ago. Hebrew support is not confirmed in the record — test it on a sample.
Related tools
For a full OCR interface for scans and PDFs on Linux — gImageReader. For annotated screenshots — Flameshot. For batch OCR of PDF files — OCRmyPDF.
gImageReader
gImageReader project
Graphical OCR built on Tesseract — turn scanned pages and PDFs into text or a searchable PDF.
Get it from the vendor
Flameshot
Flameshot project
Cross-platform screenshots with in-place markup — arrows, text, blur and numbering, ideal for marking up drawings.
Get it from the vendor
OCRmyPDF
OCRmyPDF project
Adds a searchable text layer to scanned PDFs — old reports, standards and drawings become searchable.
Get it from the vendor
Umi-OCR
hiroi-sora (Umi-OCR project)
Free open-source OCR program that works fully offline: screenshot OCR, batch OCR of images and PDF documents, and QR code reading.
Get it from the vendorThe bottom line
A small tool that saves repeated typing: click, select and paste. For whole documents, pair it with a batch tool.