The translation manager that does enough and nothing more.
Most translation platforms charge thousands per month for features you'll never touch. Keystring starts free and does what matters.
Three features.
Zero filler.
JSON import & export
Drop in your JSON files, edit visually, export back. No conversions, no lock-in: your files stay standard.
All languages, one view
Every key, every language variant, one screen. No tab-switching, no context loss. Spot missing translations instantly.
Intuitive editor
Search, filter, sort, edit. An interface designed to disappear. Spend time translating, not learning the tool.
What we chose
not to build.
Most translation platforms compete on feature count. We compete on the courage to leave things out.
Complex workflows
Direct editing
Most teams don’t need approval chains
Role-based access
Team-wide access
Trust your team, simplify permissions
Enterprise pricing
Simple pricing
Free to start, €8/mo when you grow
SDK integrations
File-based workflow
Works with what you already have
Onboarding wizard
Self-evident UI
If you need a tutorial, the tool failed
Multi-format support
JSON. Period.
One format, done well. Convert on your terms
Your files.
Now agent-editable.
Claude Code, Cursor, or any MCP client can read and write your translations directly: list projects, find untranslated keys, create keys, set values, import and export whole files, all without anyone clicking through the editor. This isn't an SDK: nothing ships inside your app, and no runtime depends on us. An agent simply drives the same file-based, API-key-scoped workflow a human already uses.
claude mcp add --transport http keystring https://keystring.dev/api/mcp \
--header "Authorization: Bearer ks_..."Two plans.
That’s it.
No per-seat fees. No hidden costs. Pick a plan and start translating.
0€/month
Up to 500 keys
No time limits. No feature restrictions.
Everything you need.
Nothing you don't.
Start translating in minutes. No sales calls, no onboarding sessions, no complexity.
Start free