SubFly AI – Fast AI Subtitle Translator (SRT, ASS, VTT)

Translate SRT, ASS, SSA and VTT subtitles with Gemini AI in minutes. Zero timestamp drift, preserved styling tags, custom glossaries and batch translation.

What it does

• Translates SRT, ASS, SSA and VTT subtitle files with Google Gemini.
• Keeps every timestamp, line count and ASS style, sign and karaoke line exactly as uploaded.
• Word lists keep character names and terms consistent; style presets include a Hinglish fansub rulebook.
• Projects keep a whole season together, with side-by-side review before you download.

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Guides

• The Complete Guide to Translating Anime Subtitles (SRT & ASS) - A start-to-finish workflow for translating anime subtitles in SRT and ASS: clean sources, safe timing and styling, consistent names, and a proper review.
• How AI Is Changing Video Localization in 2026 - What AI now does well in subtitle and video localization, where it still needs people, and how to build a workflow that uses both in 2026.
• SRT vs ASS vs VTT: Which Subtitle Format Should You Use? - How SRT, ASS/SSA and WebVTT differ in timing, styling, positioning and player support - and which subtitle format to pick for TV, fansubs or the web.
• How to Fix Subtitle Timing and Sync Drift for Good - Why subtitles run early, late or drift out of sync - offsets, frame-rate mismatches, different cuts - and how to diagnose and fix each one for good.
• 5 Ways to Translate Subtitles with AI in 2026 (and Which to Pick) - An honest comparison of five ways to translate subtitle files with AI - chat assistants, editors, platform auto-translate, scripts and dedicated tools.
• How to Translate Subtitles into Hinglish and Regional Dialects with Gemini - How to get natural Hinglish and regional-dialect subtitles from Gemini: Roman script, consistent spelling, tu/tum/aap register, glossary terms and prompts.