How to Rotate Video Online Without Uploading
Fix sideways phone footage or flip orientation. Rotate 90°, 180°, or mirror — export H.264 MP4 locally, including large files saved straight to disk.
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Practical walkthroughs for every major ALTools tool.
How to Change Video Speed Online Without Uploading
Create slow motion or speed up clips from 0.25× to 4×. Export H.264 MP4 locally, including large files saved straight to disk.
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How to Adjust Video Volume Online Without Uploading
Boost quiet audio, lower harsh levels, or mute a clip. Export MP4 locally — video picture copied when possible, large files saved straight to disk.
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How to Loop Video Online Without Uploading
Repeat a clip 2×–10× and export one longer MP4 for demos, signage, or social posts — short jobs finish fast, large outputs save straight to disk.
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How to Reverse Video Online Without Uploading
Play clips backwards for reveals, memes, and creative edits. Export a reversed MP4 with optional audio reversal — short clips are fast; longer videos supported locally.
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How to Estimate YouTube Earnings With Views and RPM
Model daily, monthly, and yearly ad revenue using niche RPM ranges or a custom rate — instant ranges in your browser.
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How to Preview YouTube Thumbnails Before You Publish
Upload a 16:9 image and see mockups on homepage, search results, and mobile feed layouts.
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How to Optimize YouTube Titles for SEO and Click-Through
Score your title for length, keyword placement, and readability — then refine before you publish.
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How to Add Subtitles to Video Online (Soft Track or Burn-In)
Mux SRT, VTT, ASS, TXT, or SBV subtitles into MP4 — as a selectable track or hard-burned into the picture.
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How to Convert Subtitles to SRT Online (TXT, VTT, ASS, SBV)
Normalize subtitle files to standard SRT format in your browser — fast parsing with no upload.
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How to Add a Watermark to Video Online (Text or Image)
Place text or PNG/JPG logos on your video at a position and size you choose, then export Fast-Start MP4.
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How to Extract Audio Stream From Video Without Converting to MP3
Demux the original audio track — AAC stays M4A, MP3 stays MP3 — without forcing a lossy re-encode.
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How to Remove Audio from Video Online
Mute any clip in your browser — export a silent MP4 or video-only file, with stream copy when possible.
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How to Capture Video Screenshots, Stitch Frames, and Export ZIP Online
Grab a single still frame, stitch multiple screenshots into one image, or batch-export up to 60 frames as a ZIP — JPEG, PNG, or WebP.
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How to Crop Video Online Without Uploading
Drag handles on the preview to remove borders or reframe your shot, then export a cropped MP4 locally.
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How to Extract Video Clips and Merge Highlights Online
Mark multiple time ranges to keep from one long video and export them as a single merged MP4.
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How to Merge Multiple Videos Online Into One MP4
Combine several clips or TS segments in the order you choose and export a single MP4 file in your browser.
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How to Record Your Screen Online Without Installing Software
Capture your screen, browser tab, or window with optional audio — then preview and download WebM on your device.
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How to Blur a Watermark on Video Online
Cover logos or text on video by blurring a selected region — processed on your device.
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Convert Video to GIF in Your Browser
Turn a short clip into GIF, WebP, or AVIF animation without uploading to a server.
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Resize Video for TikTok, Shorts, and Instagram
Use platform presets to fit social aspect ratios without leaving your browser.
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Extract MP3 from Video in Your Browser
Pull an audio track from any common video format and save as MP3.
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How to Merge Audio and Video Online
Replace or mix audio tracks with your video file — all on your device.
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How to Convert Video to MP4 Online With Fast-Start
Convert MOV, MKV, WebM, and more to MP4 with Fast-Start — including when you can remux without re-encoding.
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How to Trim Video Online Without Uploading
Remove multiple sections from one video, preview cuts on a timeline, and export a single MP4 — no upload required.
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How to Compress Video Online Without Uploading
Learn when to compress, how to pick quality presets and H.265, and tips for smaller files without uploading your video.
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