Kythera Tools

All-In-One Creator Toolkit

Professional tools for enhancing, optimizing, encoding, and improving digital content directly in your browser.

HD Quality Certified · Trusted by Creators

Quick Actions

About Kythera Features

SmartPatch Anti-Delay

Reorganizes your MP4 metadata (moov atom) to prevent blurred videos or dropped frame rates when uploading to TikTok & Reels.

Advanced Encoder (H.264)

Compresses file size without compromising visual quality using the FFmpeg.wasm engine with full CRF customization.

Speed Booster (60-120fps)

Increases video smoothness by manipulating frame timing using intelligent frame interpolation methods.

Frequently Asked Questions

Why do TikTok uploads get blurry?

TikTok's algorithm aggressively compresses videos if the data structure isn't server-friendly. Kythera embeds a specific "Faststart" structure to force TikTok to preserve your original HD quality.

Are my videos safe & private?

100% Secure. This application runs entirely inside your browser using a "Local-First" architecture. Your media is never uploaded to any of our servers.

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Your Processed Files

100%

System Status

SmartPatch

Repair, optimize, and enhance your videos

SmartPatch Execution Method

Use Encode + Patch if the original video stutters on TikTok.

Smart Patch

Auto detect & fix MP4 structure

Shark Method

Kythera 60fps

HD quality optimization

Kythera

Speed Booster

Frame timing optimization

Advanced

Select Multiplier

x2

60→120fps
Recommended

x4

60→240fps
Experimental

Drag & Drop or Tap to Upload

MP4 · 100% Browser · No Upload to Server

No file selected

Video preview will appear here

Ready — select a video to begin

Advanced Encoder

Custom H.264 encoding with FFmpeg.wasm

Video Codec

CRF (Constant Quality Factor)

Encoding Speed (Preset)

Tune

Profile

Apply TikTok HD stamp after encode

Select Video to Encode

MP4 · Processed locally in your browser

Ready — configure settings and select video

AI Upscale

Enhance your image and video quality with AI

AI Upscale is Coming Soon

This feature is currently under development. Please wait for future updates!

Settings

Customize your application experience

Theme Appearance

Choose application skin

Interface Language

Select your language

ApplicationKythera Tools Pro

Version6.3 Stable

EngineFFmpeg.wasm 0.11.x

StatusOnline & Active

About Kythera

Application details and changelog

Designed by D4nzxml

Proudly Engineered in Jonggol, West Java - Indonesia 🇮🇩

Changelog & Updates

Version 6.3 (Current)

- Full English UI implementation.
- Responsive Desktop & Tablet Grid Layout.
- OLED Black Theme & Auto Theme support via LocalStorage.
- Advanced smooth page transitions & App Information Cards.

Version 6.2

- Added Local Storage Statistics tracker.
- Integrated Welcome screen loading animations.
- Bug fixes on Advanced Encoder Engine progress bar.

Interpolation Lab

Select 60fps Video