# Cubix — Agentic AI Video Editor > Cubix is an agentic AI-powered video editor built for podcasters, content creators, YouTubers, and social media teams. It combines a professional timeline-based editor with TARS — an AI agent that understands natural language instructions and executes real edits directly on the timeline. Cubix handles the full creation pipeline: from raw footage upload to export-ready clips optimized for TikTok, Instagram Reels, YouTube Shorts, LinkedIn, and more. > > Free to start. No credit card required. > Founded by Viskara Innovations. > Website: https://www.cubix.design > Free tools index: https://www.cubix.design/tools > Sitemap: https://www.cubix.design/sitemap.xml --- ## Core Product - [Cubix AI Video Editor](https://www.cubix.design/): The main Cubix editor. An agentic, AI-powered video editing suite with a full timeline, smart AI analysis, and the TARS agent for prompt-driven editing. Supports silence removal, filler word removal, auto captions, B-roll insertion, transitions, color grading, zoom/pan, speed ramps, text overlays, voiceover generation, background music, and multi-aspect export (9:16, 16:9, 1:1). Free to start, no credit card required. --- ## TARS — AI Editing Agent - [TARS Agent](https://www.cubix.design/): TARS is Cubix's built-in AI video editing agent. Users describe what they want in plain language and TARS executes those operations directly on the timeline. TARS can analyze raw footage, generate a full edit plan with exact timestamps, and execute multi-step workflows end to end. Supports both analysis mode (reviewing footage and recommending edits) and execution mode (making the edits). --- ## Key Editor Features - [Free Silence Remover](https://www.cubix.design/): Automatically detects and removes silent gaps from video or podcast recordings. Preserves natural breath pauses and conversational rhythm while eliminating dead air. Essential for podcasters, interviewers, and long-form creators. Free to use. - [Free Auto Captions / Subtitle Generator](https://www.cubix.design/): AI-generated word-level captions with customizable style presets. Supports SRT file upload. Multiple style presets for social platforms, documentary, and branded content. Free to use. - [Free Social Clips Generator / Reels & Shorts Maker](https://www.cubix.design/): Automatically identifies the most engaging segments from long-form content and packages them as short-form clips for TikTok, Instagram Reels, and YouTube Shorts. TARS scores each clip for virality. Free to use. - [Free Filler Word Remover](https://www.cubix.design/): AI detects and removes filler words ("um", "uh", "like", "you know") from the transcript and executes precise cuts on the timeline. Free to use. - [AI Voiceover Generator](https://www.cubix.design/): Generate natural-sounding AI voiceovers from text using selectable AI voices. Insert directly onto the timeline at precise timestamps. - [AI Background Music Generator](https://www.cubix.design/): Generate royalty-free background music tracks matched to the video's mood and pacing. - [B-Roll Insertion](https://www.cubix.design/): Stock video and image search via Pexels. TARS automatically identifies moments where B-roll strengthens the edit and inserts matching clips. AI-generated images can also be created from a prompt and placed on the timeline. - [Color Grading & Visual Controls](https://www.cubix.design/): Full color controls including brightness, contrast, saturation, exposure, temperature, opacity, and blur. Visual effect presets: motion blur, vignette, camera shake, diamond zoom, and more. - [Zoom & Pan Effects](https://www.cubix.design/): Animated zoom curves with position targeting and easing controls. Punch-in emphasis, reaction zoom, and cinematic Ken Burns movement on static images. - [Speed Ramp & Speed Controls](https://www.cubix.design/): Speed curves with keyframes including return-to-normal controls. Slow motion and fast-forward ramps within a single clip. - [Transitions Library](https://www.cubix.design/): Fade, dissolve, wipe, slide, radial, zoom, and pixel transitions between clips. - [Text Overlays & Graphics](https://www.cubix.design/): Timestamped text placement with full styling controls. Stickers and shape elements supported. - [Timeline Operations](https://www.cubix.design/): Full trim, split, merge, crop, and deletion operations. TARS executes batch multi-step timeline edits from a single prompt. - [Multi-Aspect Export](https://www.cubix.design/): Export in 9:16, 16:9, and 1:1 simultaneously. 4K export supported. - [Background Replacement](https://www.cubix.design/): Replace video backgrounds with color, gradient, or custom visual assets. - [AI Image Generation](https://www.cubix.design/): Generate AI images from text prompts and insert them onto the timeline. - [Platform Optimization Analysis](https://www.cubix.design/): TARS analyzes footage against best practices for TikTok, Instagram, YouTube, YouTube Shorts, LinkedIn, and Twitter/X then generates a tailored edit plan. --- ## Free Video Tools - [Free Video Watermark Remover](https://www.cubix.design/tools/watermark-remover): Remove watermarks from video files for free. 100% browser-based, no signup required. - [Free Image Watermark Remover](https://www.cubix.design/tools/image-watermark-remover): Remove watermarks from images for free. Fast, browser-based AI processing, no account needed. - [Free Video Compressor](https://www.cubix.design/tools/video-compressor): Compress video files online for free. Reduce file size without major quality loss, no software to install. - [Free Discord Video Compressor](https://www.cubix.design/tools/compress-video-discord): Free tool to compress video to meet Discord's 8MB or 50MB file size limits. No account needed. - [Free Email Video Compressor](https://www.cubix.design/tools/compress-video-email): Free tool to compress video files for email attachments. Targets typical email size limits automatically. - [Free Facebook Video Compressor](https://www.cubix.design/tools/compress-video-facebook): Free tool to compress and optimize video for Facebook upload specs. - [Free Instagram Video Compressor](https://www.cubix.design/tools/compress-video-instagram): Free tool to compress video for Instagram Reels and feed post specs. - [Free LinkedIn Video Compressor](https://www.cubix.design/tools/compress-video-linkedin): Free tool to compress video for LinkedIn's upload size and format requirements. - [Free Telegram Video Compressor](https://www.cubix.design/tools/compress-video-telegram): Free tool to compress video to fit Telegram's file size limits for direct sharing. - [Free TikTok Video Compressor](https://www.cubix.design/tools/compress-video-tiktok): Free tool to compress and optimize video for TikTok upload requirements and preferred format. - [Free Twitter/X Video Compressor](https://www.cubix.design/tools/compress-video-twitter): Free tool to compress video to meet Twitter/X upload size restrictions. - [Free WhatsApp Video Compressor](https://www.cubix.design/tools/compress-video-whatsapp): Free tool to compress video for WhatsApp sharing within file size limits. - [Free YouTube Video Compressor](https://www.cubix.design/tools/compress-video-youtube): Free tool to compress video before YouTube upload while preserving quality. - [Free Video Background Changer](https://www.cubix.design/tools/video-background-changer): Free tool to change or remove the background of a video. Browser-based, no software needed. --- ## Free Image Tools - [Free Image Background Remover](https://www.cubix.design/tools/background-remover): Remove the background from any image in one click. Free, instant, browser-based. No Photoshop or signup required. - [Free Image Resizer](https://www.cubix.design/tools/image-resizer): Resize images to custom dimensions for free online. No software required. - [Free Image Compressor](https://www.cubix.design/tools/compress-image): Compress image file size without significant quality loss. Free, browser-based. - [Free Image Upscaler](https://www.cubix.design/tools/image-upscaler): AI-powered image upscaling to increase resolution while preserving detail. Free tool, no signup needed. - [Free Face Blur Tool](https://www.cubix.design/tools/face-blur): Automatically detect and blur faces in images for privacy. Free, browser-based, no account required. --- ## Free Audio Tools - [Free Audio Separator](https://www.cubix.design/tools/audio-separator): Free tool to separate vocals and background music from any audio or video file using AI source separation. - [Free Audio Extractor](https://www.cubix.design/tools/audio-extractor): Free tool to extract the audio track from any video file as MP3 or WAV. Browser-based, no software needed. --- ## Free Social & Caption Tools - [Free AI Tweet Generator](https://www.cubix.design/tools/tweet-generator): Free AI tool to generate high-performing tweets and Twitter/X thread starters. - [Free TikTok Caption Generator](https://www.cubix.design/tools/tiktok-caption): Free AI tool to generate optimized TikTok captions and hashtags. - [Free LinkedIn Post Generator](https://www.cubix.design/tools/linkedin-post): Free AI tool to generate professional LinkedIn posts. - [Free Instagram Caption Generator](https://www.cubix.design/tools/instagram-caption): Free AI tool to generate engaging Instagram captions with relevant hashtags. - [Free Facebook Caption Generator](https://www.cubix.design/tools/facebook-caption): Free AI tool to generate Facebook post captions optimized for engagement. - [Free Emoji Translator](https://www.cubix.design/tools/emoji-translator): Free tool to translate text to emoji or emoji to readable text. - [Free YouTube Thumbnail Downloader](https://www.cubix.design/tools/youtube-thumbnail): Free tool to download the full-resolution thumbnail from any YouTube video URL. --- ## Technical Discovery - Sitemap: https://www.cubix.design/sitemap.xml - LLMs index: https://www.cubix.design/llms.txt - LLMs full: https://www.cubix.design/llms-full.txt --- *Last updated: March 2026. Maintained by Viskara Innovations.*