FET Viewer Visualize, Edit & Share Your FET Timetables
Upload your .fet file, fine-tune it with drag-and-drop, share it with your whole school — then download it back to FET with nothing lost.
Lossless .fet round-trip 30+ languages Built on open-source FET
See it in 12 minutes
Find the conflicts, fix them by hand, lock what is agreed, and share the result. Jump to any part.
The video plays from YouTube when you tap Play. Nothing loads from YouTube before that.
Chapters
Check your FET file
Check your file. No account needed.
- The check finds rules that point at a teacher, a room or a class that does not exist.
- The check finds activities that have no legal start time left.
- The check finds classes that fit in no room they may use.
Every result is arithmetic. You can check each one by hand.
Check a fileEverything You Need to Master Your Timetable
Powerful tools for the real-world scheduling work that starts after FET generates.
Lossless .fet Round-Trip
Upload your .fet file and download it back — every activity, constraint and setting carried 1:1. CSV import is supported too.
Drag-and-Drop Editing
Move lessons on a live grid with real-time conflict detection for teachers, groups and rooms.
Planner Mode
Ask "where can this lesson go?" and get a proven answer — valid slots, the bottleneck when there are none, and safe swap chains.
Pre-flight Analyzer
Catch impossible timetables before you generate. Every error comes with a proof, not a guess.
Team Sharing & Access Links
Share view-only or edit access with secure links — department heads, teachers, or the whole staff room.
Print Designer
Publication-ready printouts with custom branding, legends, layouts and per-teacher or per-class sheets.
Embeds & Digital Signage
Put live timetables on your website or hallway screens, with announcements and QR codes.
Substitutions
Publish daily cover assignments so everyone knows who covers what, where.
Workload & Room Insights
See whether the teaching load is fairly spread, where the gaps fall, and which room stands empty all Tuesday.
The Perfect Complement to FET
Designed specifically to fill the gaps in FET's workflow
Human Judgment Meets Automation
FET generates optimal schedules algorithmically — we give you the visual tools to make the final adjustments with confidence.
Skip the Command Line
No more wrestling with XML. Upload your .fet file, see it instantly, make changes in a modern web interface.
Built for Teams, Not Just Administrators
Everyone sees exactly what they need — nothing more, nothing less.
Pay Once, Not Every Month
Start free, and if you outgrow it, pay for the period you choose—nothing renews automatically. Your data is never locked in either: download a valid .fet file whenever you like.

Ready to Take Control of Your Timetable?
Join institutions worldwide that are bridging the gap between automated scheduling and real-world flexibility.