Drop videos here or click to select
Choose at least two videos. MP4, MOV, MKV, WebM, AVI, and other common formats are supported.
Drag clips into order or use the move buttons. Each clip has its own Remove button.
Compatible clips retain their frame. When conversion is needed, the first clip sets the shape and other clips receive padding if needed.
If any clip has audio, silent clips receive a silent track so sound stays aligned across the joined video.
All-WebM input downloads as WebM. Any other combination downloads as MP4.
Combine several clips into one continuous video without manually matching their resolution, frame rate, or audio layout. Reorder the selected files before processing to control the final sequence.
Compatible clips retain their frame. When conversion is needed, the first clip sets the shape and other clips receive padding if needed.
You can select MP4, MOV, MKV, WebM, AVI, FLV, MPEG, TS, OGV, and other video formats that the browser tool can read. Exact compatibility depends on the codecs used inside each file.
Compatible clips retain their original frame. Otherwise the first clip defines the output shape and resolution. Other clips are fitted with padding rather than stretched.
If at least one clip has audio, the result includes a single normalized soundtrack. Silent clips receive silence for their own duration so later audio remains synchronized. If every clip is silent, the result has no audio track.
Compatible MP4 clips with matching encoding settings can be joined without re-encoding. Other inputs are converted to a common picture and audio layout, which takes longer and can affect quality or size. All-WebM input produces WebM; other combinations produce MP4.
No. The selected videos are processed in this browser tab and are not uploaded to a server. Large files or long lists may need more memory and processing time.
Format and beautify Java, Python, JavaScript, JSON, HTML and more; adjust indentation, spacing and line breaks.
Trim, join or split recordings, remove silence or noise, and adjust volume, speed, pitch or channels.
Open and edit CSV or Excel sheets, format tabular text, and convert CSV to Excel or SQL.
Write and preview Markdown, render Mermaid diagrams, and convert Markdown, HTML and tables between formats.
Compare passages, count words and keywords, sort or replace lines, and view DOCX text.
Look up Chinese meanings, synonyms and antonyms, or find IPA pronunciations in multiple languages.
Convert between MP3, WAV, FLAC and more, play audio or raw PCM, and inspect or edit audio metadata.
Inspect, compare and validate JSON; test JSONPath expressions, or convert data to CSV, YAML and XML.
Transcribe audio to text, generate speech from text, or record your voice in the browser.
Convert and compress video, trim or join clips, resize frames, and extract audio.
Play local or streaming video, record your screen or camera, and use your camera as an online mirror.
Compress or merge PDFs, split and rearrange pages, convert pages to images, and view or compare documents.
Convert image formats, resize or crop photos, compress files, compare pictures, and extract text with OCR.
Capture and beautify screenshots, turn text into images or GIFs, draw on a whiteboard, and create word clouds or favicons.
Edit SRT or VTT captions with a video preview, shift timing, convert formats, and manage subtitle tracks.
Open ZIP, 7Z, RAR or TAR files, extract selected contents, and create new archives with optional ZIP/7Z passwords.
Encode and decode Base64 or Base32, escape URLs, HTML and Unicode text, and inspect JWT contents.
Convert number bases and values between binary, decimal and hex; turn numbers into words or text into binary.
Work out percentages and fractions, summarize statistics, and calculate grades, discounts or aspect ratios.
Show an online clock, run a countdown or stopwatch, and calculate dates, ages or time-zone differences.
Check your IP and IPv6 connection, inspect HTTP requests or HAR files, and calculate CIDR address ranges.
Convert length, weight, temperature, data storage and other units.
Convert HEX, RGB and HSL values, extract colors from an image, check contrast, or test your display with solid colors.
Generate and scan QR codes or barcodes, including QR codes for links and Wi-Fi networks.
Generate hashes, UUIDs and passwords, test regular expressions, create URL slugs and check file permissions.
Check screen resolution and refresh rate, measure with a screen ruler, test keys, or read from a teleprompter.
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