A free, local-first visual editor for designers to craft code in real React codebases
Free TikTok banner splitter: turn one image into a swipe-through profile banner
Stage
Startup
Not given
Founded
Not given
Not given
Based in
US
Not given
Pricing model
Freemium
Freemium
Pricing
Free self-hosted version available on GitHub. For Teams: Custom pricing tailored to your team's needs. Contact us or book a demo.
Free: all standard layouts, seam checks, video banners, no watermark or account. Pro: $9.90 one-time (plus local tax), includes batch splitting up to 20 images, custom grids 1×1 to 5×5, custom tile sizes 200–4096 px, file naming templates, and no ads.
Key features
Real-time visual editing of React components
Infinite canvas design interface
Real-time collaboration on code
Works with existing React projects and Storybook
Splits images into 1×3, 2×3 or 3×3 TikTok tiles with exact 1080×1440 px output
Seam check and reassembled preview shows tiles re-joined to verify alignment before posting
No upload to servers; all processing happens in your browser
Downloads all tiles in one ZIP with standard sequential naming (tiktok-banner-1.png, -2, -3)
Works with HEIC photos directly from iPhone without conversion to JPG
Supports video banners: split a clip into 3, 6 or 9 MP4s with matching covers
Instagram 4:5 grid tiles for profile murals with same 3:4 layout logic
Full-screen 9:16 vertical layout option at 1080×1920 px
Pro: batch split up to 20 images into one ZIP with each as a folder
Pro: custom grids from 1×1 to 5×5 with any tile size 200–4096 px and file naming templates
What makes it different
Code is the source of truth—no design drift from implementation
Works directly in real codebases with existing design systems
AI-assisted design generation that understands React architecture
Open-source and transparent to the development community
No watermark, no account, no login, nothing uploaded to servers
Reassembled preview shows the banner lined up before you post, catching misalignments
Exact pixel-perfect tiles every time with seam and safe-zone warnings for text and faces
Sequential file numbering and posting order diagram prevent mirrored or misaligned banners
Onlook
BannerSplitter