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Free · Local-first · No account

Record and capture anything.It stays on your machine.

Screen recording and screenshots that stay on your device by default. Record a tab in one click with no screen-picker dialog, write crash-safe to disk, and export produced-looking output with auto-zoom, cursor polish, and padded backgrounds. All free, all local.

No account · No watermark · Stays on your machine

Add to Chrome — free See it produced
SuperchargeCapture
Local-first
This tab Window Screen
Microphone
System audio
Camera bubble Draggable webcam circle
Highlight clicks Ripple + auto-zoom on click
Countdown
Off 3s 5s
Start recording
AutoLightDark
SuperchargeCapture v1.0.0

Zero-friction recording

No screen-picker dialog. No login. No forced upload.

Most tools throw an OS share-picker at you before you can record a tab, then push the file to a cloud you have to sign into. SuperchargeCapture records the current tab straight through Chrome, one click and no picker, and writes the footage to your device. The recording is yours the moment it starts. Nothing uploads unless you choose to share it.

  • Recording "This tab" skips the OS screen-share dialog entirely: one click and it records
  • Footage is written to your device as you record, never to our servers
  • No time cap, no watermark, no account. Record as long as you want.

The usual way

  1. Click record
  2. Choose source in the OS picker
  3. Sign in to a cloud account
  4. Wait for the upload to finish

SuperchargeCapture

  1. Click record — recording.
  • Accounts Zero no login, ever
  • Sent to us 0 bytes captures stay local
  • Annotation tools 6 all free to export
  • Watermark None no time cap either

The editor — no install needed

From raw clip to produced walkthrough.

Auto-zoom toward each click, a smoothed cursor, and a padded backdrop — the look that usually costs a subscription. Flip between raw and produced to see it.

This is the editor's real output. The click fires the zoom, the camera pushes toward it, the cursor is smoothed, and the backdrop is padded, all rendered locally on export. Toggle Raw for the untouched capture. Tab recordings only.

Raw clip in. Polished walkthrough out.

A real timeline, the effects that make a screen recording look produced, and captions transcribed on your own machine. Everything renders locally during export. No subscription, no forced upload, no separate app.

Editor

  • Auto-zoom on clicks

    A gentle zoom toward each click, applied automatically, so viewers see exactly what you clicked. Tab recordings only; window and screen captures export without it.

  • Cursor polish

    A smoothed cursor path and click ripples replace the jittery real pointer.

  • Padded background

    A gradient backdrop with rounded corners and a soft shadow frames the capture. Two presets, Dusk (amber) and Graphite, or toggle it off for raw.

  • Timeline with real cuts

    Trim both ends, split the clip at the playhead, and ripple-delete a segment so the gap closes behind it instead of leaving dead air.

  • Per-clip speed

    Set any segment to 0.5×, 1×, 1.5×, or 2×, with eased ramps across the boundary so a speed change does not jolt.

  • Remove all silence

    One pass finds the silent gaps in the audio and cuts them out, tightening a rambling take without hand-trimming each pause.

  • Offline auto-captions

    Transcribe your narration into editable caption cues with a Whisper model bundled inside the extension. No upload, works offline, English only.

  • Music that ducks

    Add a background track and it dips automatically under your voice, then rises again when you stop talking.

One extension. Both halves of capture.

Full-page screenshots and screen recording in one extension, sharing a single local-first core that keeps every capture on your device.

Screenshot

  • Four capture modes

    Full page (scroll and stitch the whole page, sticky headers handled correctly), Visible (one instant viewport grab), Region (drag a rectangle), and Element (hover to highlight a DOM node, click to grab just it). Export PNG, JPG, or WebP.

  • Free annotation editor

    Arrow, Box, Ellipse, Highlight, Step number, Spotlight, Text, and Redact (pixelate or blur anything sensitive), plus a Select cursor to move what you placed, seven colors and a custom picker, an object list, and crop with aspect-ratio presets. Paste or drop in an image to edit one you did not capture. Every tool exports free.

  • Copy or save in one step

    Copy straight to the clipboard as PNG, or save to disk. Full-page multi-section captures can also export to PDF from the editor.

Recording

  • Three sources, one picker-free path

    This tab (recorded directly through Chrome, with no OS screen-share dialog), Window, or Screen. Most recorders force a picker even for a single tab. Here the tab path is one click.

  • Microphone with a live level meter

    Pick your input device and watch a live level meter before you record, so "is my mic working?" is answered up front, not discovered after a ruined take. System-audio capture is a separate toggle.

  • Draggable webcam bubble

    A movable circular webcam overlay with its own device picker and optional background blur. The blur runs on-device, so your video never leaves the machine.

  • Crash-safe by design

    Recordings write to OPFS in one-second chunks as they run. Kill the tab or crash mid-recording, reopen the popup, and the footage is recovered. Tools that buffer in memory lose the whole take.

  • Countdown and no limits

    Off, 3-second, or 5-second countdown before recording starts. No time cap, no forced login, no watermark. The file is yours.

Sharing, on your terms

Local by default. Shared only when you say so.

Captures live in OPFS on your device by default, with no setup. When you want to share a recording, Share to Drive uploads it to your own Google Drive using a scope that can only see files the extension created. Nothing passes through SuperchargeBrowser servers.

  • Captures stay on-device in OPFS until you choose to do something with them
  • Share to Drive uses the drive.file scope, so it cannot see the rest of your Drive
  • Drive upload is Chrome-only and opt-in, off unless you click it
SuperchargeCapture
Local-first
Full pageVisibleRegionElement

Scroll & stitch the entire page

Format
PNG JPG WebP
Capture
AutoLightDark
SuperchargeCapture v1.0.0

Provably local

A recorder that cannot read your browsing.

A screen recorder sits in a sensitive spot. Plenty of them ask for the run of your browser, inject a script on every page, and stream usage data to third-party analytics. You end up trusting a recorder with sites it has no reason to see.

SuperchargeCapture is built the other way. It runs on activeTab, so it only touches a page after you start a capture on that tab. There are no host permissions at install, no webRequest, and no always-on content script. It cannot read or rewrite the pages you visit by default. One optional permission lets you record across sites; you request it yourself, and you can revoke it from Chrome's extension settings at any time. Captures stay in OPFS on your device, and nothing leaves unless you choose to share it.

  • Zero host permissions at install - no access to your sites by default
  • Optional cross-site recording permission only when you enable it
  • Nothing is injected into a page until you start a capture on it
  • Zero telemetry, no analytics, no account. Captures live in OPFS on your device.
  • Transcription runs on-device: the caption model ships in the extension, so no audio is uploaded
  • Share to Drive uses the drive.file scope: only files the app creates, never your whole Drive
  • activeTab only: the extension touches a tab solely when you invoke it there

Frequently asked questions

Where do my recordings and screenshots go?
They stay on your machine. Captures are written to OPFS (the browser’s Origin Private File System) on your device — not to any SuperchargeBrowser server. There is no account and no telemetry. The only time anything leaves your machine is if you explicitly use Share to Drive, which uploads a single recording to your own Google Drive.
What happens if Chrome crashes mid-recording?
The footage is recovered. SuperchargeCapture writes recordings to OPFS in one-second chunks while you record, rather than holding everything in memory. If the tab is killed or Chrome crashes, reopen the popup and it offers to recover the unsaved recording. Tools that buffer the whole take in memory lose it on a crash.
Do I have to go through the screen-picker dialog to record?
Not for the current tab. Recording "This tab" goes through Chrome’s tab capture directly, so there is no OS screen-share picker — one click and it records. Window and Screen recording use the standard picker because they capture content outside the tab.
Is the auto-zoom available on every recording?
Auto-zoom and cursor effects are available for tab recordings. They rely on captured pointer samples, which are recorded when you capture a tab; for window or screen recordings those samples may be unavailable, so the effects can be skipped. The padded background and trim work on any recording.
Are the captions generated on my machine?
Yes. The speech-recognition model (Whisper tiny.en) is packaged inside the extension and remote model fetching is disabled, so clicking Transcribe runs it locally — your audio is never uploaded and captioning works with no connection at all. Every cue is editable afterwards, and the captions render into the exported video. English only, which is the trade for shipping the model inside the extension.
Can it export MP4, and does it watermark?
No watermark, ever. Export to WebM always works; MP4 export depends on whether your browser supports MP4 in MediaRecorder. GIF export runs at a reduced frame rate and is capped at 120 seconds, with a warning past 30 seconds because the file gets large — WebM and MP4 have no length limit. No account required.
How is this different from GoFullPage or Loom?
On screenshots: the annotation editor is fully free, with no paywall on exporting your arrows and boxes, it handles sticky headers correctly on full-page stitch, and it adds Region and Element capture that GoFullPage does not have. On recording: there is no forced login, no forced cloud upload, and no always-on injection, and the output gets auto-zoom, cursor polish, padded backgrounds, and captions transcribed on-device that usually cost a subscription elsewhere. Everything runs locally.
What permissions does it need, and why?
activeTab (touch a page only when you invoke a capture there), storage and unlimitedStorage (keep captures and settings on-device), tabs and tabCapture (picker-free tab recording), offscreen and scripting (run the capture and stitch pipeline), and identity (optional Share to Drive). There is no host_permissions at install and no webRequest. One optional permission - cross-site recording - is requested in-context only if you enable it, so the overlay survives navigating between domains during a recording. You can revoke it from Chrome's extension settings at any time. That is the full set as of August 2026.
Can I capture Netflix or other DRM-protected video?
No — the browser blocks frame capture of DRM-protected video (Netflix, Disney+, and similar), so it comes out black. This is a platform constraint any screen capture tool shares, not something specific to SuperchargeCapture.

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