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FKX Pro How it works

FKX Pro · Video Tools

AI Caption Generator for Videos

FKX Pro is an AI caption generator built to create video captions fast, let you edit every word, and add polished styles and motion with no watermark.

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Free · Fast · No watermark

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MAKE EVERY WORD COUNT
FKX Bold Apple Smooth 2 Words Light Sweep
Generate Fast Turn spoken video into timed captions.
Edit Every Word Correct and customize captions manually.
Animated Styles Add motion, grouping and visual effects.
No Watermark Export without an FKX watermark.

Automatic captions

Create Captions Faster

Manually typing every line of dialogue can slow down even a simple video edit. FKX turns spoken audio into timestamped captions so you can move directly to reviewing, styling and finishing the result.

The goal is simple: use AI for the repetitive first draft while keeping the creative decisions in your hands. Upload your video, generate the captions, then refine them before export.

Whether you are working on short-form content, a talking-head video, a tutorial or a client edit, the FKX caption editor gives you a quicker starting point than typing every caption manually.

Stay in control

AI Speed. Manual Control.

Automatic transcription gets you to the first draft. FKX lets you take control of what happens next.

Aa

Edit Individual Words

Tap or select a caption word to correct the text instead of regenerating the entire transcript.

T

Adjust the Look

Change caption size, color, styling and other visual controls to fit the design of your video.

↕

Position Captions

Move captions or selected words so important content stays visible and the composition feels intentional.

▶

Choose Animation

Apply motion such as Apple Word, Apple Smooth or Blur In independently from the caption style.

1·2

Control Grouping

Display captions as 1 Word, 2 Words, 3 Words or a full Line depending on the pace of your edit.

✦

Style Selected Words

Make individual words stand out without forcing every caption in the video to use exactly the same treatment.

Designed captions

Premium-Style Captions

Generate the words automatically, then turn them into captions that look intentionally edited rather than automatically placed.

FKX Bold CLEAN. BOLD. DIRECT.
FKX Rough MAKE IT HIT DIFFERENT
Apple Smooth WORDS THAT FLOW
Light Sweep ADD A POLISHED FINISH

Flexible by design

Add Motion That Fits Your Video

FKX separates appearance, movement, grouping and finishing effects. That gives you more flexibility than being locked into one complete subtitle preset.

Style FKX Bold
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Animation Apple Smooth
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Effect Light Sweep
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Grouping 2 Words

Creator workflow

Built for Fast Caption Editing

FKX combines automatic caption generation with hands-on editing controls. Generate a first draft from your video, then correct individual words, adjust how captions appear, and choose the motion and styling that fits your content.

Instead of being locked into one automatic subtitle design, you can refine the result before export. This makes FKX useful for short-form videos, talking-head content, tutorials, social clips and creator workflows where captions need to look intentional as well as readable.

The editor also includes practical video controls such as splitting and removing clips, adjusting zoom and position, using Fit or Fill, and working with common video layouts. Caption creation stays at the center of the workflow, while these tools help you finish more of the edit without constantly switching between apps.

Made for creators

Built for Short-Form Content

A modern video caption generator needs to work with the way creators actually publish. FKX is designed for speech-driven videos where clear, well-timed captions are an important part of the finished edit.

Use it for social clips, creator videos, educational content, marketing edits, podcasts and other videos where viewers need to follow what is being said quickly.

YouTube Shorts TikTok Videos Instagram Reels Talking-Head Videos Podcasts Tutorials Marketing Videos Client Content

Simple workflow

How FKX Works

Go from uploaded video to customized captions in one browser workflow.

01

Upload

Choose the video you want to caption.

02

Generate

Turn speech into timed captions with AI.

03

Edit

Correct words and make manual adjustments.

04

Style

Add caption design, grouping and motion.

05

Export

Finish your captioned video without an FKX watermark.

Start creating

Free Captions. No Watermark.

Use FKX as a free AI caption generator to create, edit and style captions directly in your browser. Keep control of the final look and export without an FKX watermark.

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FAQ

Frequently Asked Questions

An AI caption generator analyzes speech in a video and converts it into timed text. FKX then lets you edit those captions, customize individual words, choose styles and add motion before export.
Yes. You can use FKX to generate and edit captions directly in your browser.
No. FKX does not add its own watermark to your exported captioned video.
Yes. You can correct caption text and work with individual words instead of being locked into the first automatic transcription.
Yes. FKX includes caption motion options such as Apple Word, Apple Smooth and Blur In, along with word grouping and visual effects.
Processing time varies with video length, file size and connection speed. FKX is designed to get you from an uploaded video to editable captions quickly without requiring you to type every line manually.
FKX can be used from modern desktop and mobile browsers, with responsive editing controls designed for different screen sizes.
No traditional desktop installation is required to start. The FKX caption tool runs in your browser.

FKX Pro

Generate Captions. Make Them Yours.

Start with AI-generated captions, then customize the words, style and motion until they fit your video.

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FKX Pro AI caption generator interface