We build utility browser extensions with a single guiding mission: to keep local workflows truly private and zero-latency.
Over the past decade, basic web tools have shifted from lightweight local scripts into bloated cloud operations. Simple tasks like taking page screenshots have become slow, laggy, and filled with tracking modules, advertising cookies, and mandatory remote user profile requirements.
Many popular screen capture utilities upload your image files directly to cloud servers for instant sharing—often without clear user consent. This creates huge data leak risks when you work with internal administration panels, sensitive customer records, or financial charts.
CustomScreenshot was designed as an absolute rejection of bloated cloud capture tools. We wanted to return to a simple, ultra-fast manual cropper utility that does one task perfectly: capture and compress browser viewports locally, with complete coordinate control, completely offline.
Our code runs entirely in the sandboxed scope of your browser tab using native HTML5 Canvas drawing hooks. No trackers, no central APIs, and no telemetry tracking. The resulting bundle is incredibly compact, fast, and easy to verify by reviewing our open-source codebase.
Four engineering standards that direct our developer operations and product design parameters.
Since all formatting and image compression algorithms execute locally within the Chromium browser context, captures compile and download in milliseconds, without any cloud processing delays.
We restrict our extension permissions to the single active tab only. CustomScreenshot cannot read background browser data or scan your history, ensuring complete local isolation.
We believe in full visual accountability. Our complete repository remains open to developer inspections, security audits, and community forks on GitHub, ensuring verifiable trust.
Our tool doesn't stretch or warp crop coordinates. Downscaling options respect display device pixel ratios (DPR) to guarantee crisp typography and sharp vectors on all screen densities.