Free online screen recorder no download. Quick screen recorder free online no sign up, high quality, and no watermarks.
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{{ formattedTime }}
Microphone Input
🎚️ Background Music
Playback Position {{ formatBgmTime(bgmStartTime) }} / {{ formatBgmTime(bgmDuration) }}
Volume {{ Math.round(bgmVolume * 100) }}%
Hear BGM while recording
🎤
Record Microphone
Record microphone voice alongside the screen and mix it with system audio.
🎵
Add Background Music (BGM)
{{ bgmFile.name }}
Add custom BGM to make your screen recording video more engaging.
Background music loaded successfully.
Music Start Point {{ formatBgmTime(bgmStartTime) }} / {{ formatBgmTime(bgmDuration) }}
Hear BGM while recording
💡 Note: Muting this will not affect the music added to the recorded video. Recommended to turn off to avoid echo/distraction.
Background Music Volume {{ Math.round(bgmVolume * 100) }}%

Recording History

Total Size: {{ totalUsedSpace }} {{ historyRecords.length }} Video(s)

No recording history. Click "Start Recording" above to begin!

{{ record.title }}
Recovered
{{ formatDuration(record.duration) }}
{{ formatBytes(record.size) }}
{{ formatDate(record.startTime) }}
{{ countdown }}
Preparing to record. Please switch to your target window.
{{ playingRecordTitle }}
⚠️ Interrupted Recording Detected

We detected that the following recording session was not saved properly (possibly due to browser crash, process termination, or power outage). You can recover and export it now, discard it, or handle it later.

{{ record.title || 'Unsaved Recording' }}
Time: {{ formatDate(record.startTime) }} | Format: {{ record.mimeType ? record.mimeType.split(';')[0] : 'Default' }}
Free Online Screen Recorder No Download Free Online Screen Recorder with Audio Screen Recorder Free Online No Sign Up No Installation No Account Required Free Screen Recorder Crash Recovery Direct Background Music Mixing High Quality Capturing High Frame Rate / High Bitrate Screen & Voice Recorder

How to Use a Free Online Screen Recorder No Download Required?

Many traditional screen recorders require you to download bulky installers and often come with recording time limits, forced watermarks, or expensive pricing. With Rec365, a premium free online screen recorder no download tool, you can start recording high-definition video in four simple steps directly from your web browser:

1
Click "Start Recording"
Click the "Start Recording" button on this page, then choose to record your entire screen, a specific application window, or a browser tab.
2
Start Recording after Countdown
The system will automatically countdown 3, 2, 1. Once the recording starts, you can switch to your target interface and begin your demonstration.
3
Click "Stop Recording"
When finished, return to the page and click "Stop Recording," or simply click the browser's native "Stop Sharing" button at the bottom of the screen.
4
Download Your Recorded Video
Your recorded video is saved instantly in the local history list. You can double-click to rename, preview it online, and download it to your local drive.

How to Use a Free Online Screen Recorder with Audio Channels Combined?

When capturing your screen, adding audio explanation is crucial for making professional presentations. Rec365 is a robust free online screen recorder with audio capability, supporting the simultaneous capture of two independent audio sources:

🎙️ Record Microphone Voice

Check the "Record Microphone" option before recording. The browser will request permission to use your microphone input. This is perfect for voiceovers, lectures, tutorials, or gaming commentary. The microphone track will be intelligently mixed with your system audio and background music in real-time.

🔊 Record System Audio

When clicking start and selecting the recording source in the browser, make sure to check the "Also share system audio" option (or "Share audio" depending on your OS/browser). This allows the tool to record inner computer sounds (such as web audio, video sound effects, gameplay audio, and music players) with lossless quality.

How Does Our Screen Recorder Free Online No Sign Up Keep Your Data Safe?

The biggest concern with web-based screen recorders is data loss from unexpected browser crashes, power outages, or accidental closing of tabs. Rec365 addresses these issues with our local disaster recovery and buffering technology:

Dual Buffering & Saving Throttling

During recording, our tool does not store all video data in RAM (which could crash the browser due to memory limits). Instead, we use an efficient throttling algorithm that saves video blobs to the browser's local database (IndexedDB) every 5 seconds. This minimizes disk I/O overhead and maximizes runtime stability.

Crash Recovery & Power Outage Protection

If your computer suddenly shuts down, the browser crashes, or the tab is closed, the recorded video slices remain safely stored in your browser's IndexedDB. The next time you open Rec365, it will automatically detect the interrupted recording and prompt you to "Recover and Export Video." Click it to merge and recover your video without any data loss.

Features of Rec365 Free Online Screen Recorder

⚡
100% Online, No Download
Based on WebRTC technology, record your screen directly in the browser with no installation or extension required.
🛡️
Crash & Outage Recovery
Industry-first IndexedDB throttling protection. Even if your browser crashes or computer turns off, you can recover the video upon reopening.
🎵
Real-time BGM Mixing
Import background music (BGM) with one click and mix it in real-time. No post-editing software is required to add music to your video.
🔓
Screen Recorder Free Online No Sign Up
Enjoy a premium screen recorder free online no sign up, no registration, and no email verification required. Just open and record.
🎁
Free Screen Recorder
Provide a completely free screen recorder with unlimited recording length and absolutely no hidden fees.
✨
High Quality, No Watermarks
Exported videos have no watermarks or time limits. Perfect for clean, professional demonstrations and commercial use.
📺
High Frame Rate & Bitrate
Supports up to 720P/1080P/2K/4K/8K resolution, 30/60/120/144 FPS frame rate, and 80Mbps bitrate configuration.
🎚️
Screen Recorder Free Online with Audio
Intelligently mix microphone voice, system sound, and background music in real-time on your local machine.
💻
Multi-Platform Compatibility
Works smoothly on Windows, macOS, Linux, iPadOS, ChromeOS, and supports major browsers like Chrome, Edge, Firefox, and Safari.
Ready
Requesting Permission
Permission Denied
Preparing
Merging...
Recording
Paused
Record
Recovered Video
Are you sure you want to discard this unsaved recording? ({title})
Are you sure you want to delete recording "{title}"? This operation cannot be undone and will free up local disk space.
Warning: Are you sure you want to clear all history? This will permanently delete all recordings and cannot be recovered!
IndexedDB is not supported by your browser. Unsaved recording chunks might be lost.
The audio file is too large. Please select an audio file smaller than 60MB.
Failed to import background music. Please try again.
No valid video chunks found for this recording session. The session has been cleared.
Failed to recover recording. The chunks might be corrupted.
Permission Denied:
Failed to start recording. Please check if your browser supports this codec.
Could not find video chunks for this recording. The files might be corrupted.
Failed to load video player.
No video chunks found.
File read or download failed.
Failed to delete record.