Add Subtitle.ai

addsubtitle.ai ↗

Online AI video translation, subtitles and dubbing in 100+ languages

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SI Score: 70/100
Pricing: Freemium
Free plan: Not confirmed
Sign-up required: Not confirmed

Video Translation Voice Dubbing Subtitle Styling Bilingual Subtitles Video Rewrite Lip Sync Web App

Ask SI about Add Subtitle.ai

Answers use saved listing facts and recorded sources.

Homepage screenshot

Screenshot of the Add Subtitle.ai homepage

SI REVIEWBased on the site's own pages, in a directory managed by people

What it does

Add Subtitle.ai is an online video editor that translates video subtitles and voice into more than 100 languages. It adds bilingual subtitles, styles captions, and rewrites video dialogue with lip sync. The site says it is trusted by 10,000+ creators and businesses.

Add Subtitle.ai runs in the browser and focuses on video translation, subtitles and dubbing. The homepage says you can translate video subtitle and voice into 100+ languages instantly, add bilingual subtitles and edit online in a few clicks, and rewrite video and dub with lip sync. It also offers subtitle styling with fonts that support 100+ languages. The site says it is trusted by 10,000+ creators and businesses. A free option is mentioned through Try for Free buttons, but the homepage does not list plan limits or prices. The page does not state whether an account is required, whether an API exists, or whether the software is open source. Check the pricing page for current details before you commit.

Strengths

Runs online in the browser
Translates video subtitle and voice into 100+ languages
Adds bilingual subtitles and lets you edit online
Includes subtitle styling and video rewrite with lip sync

Watch out for

The homepage does not list plan limits or prices
No API or open source details are stated on the homepage
It is not clear from the homepage whether an account is required

Best for

Content creatorsCourse creatorsSocial media creatorsBusinesses

SI Score

70/100

#153 in Video Creation & Editing

Based on published information. No hands-on task test.

Method 2.0 · Earlier source review Assessed Oct 14, 2026Score ceiling for this evidence: 74/100.

Product usefulness 70

Evidence

The homepage shows clear video translation, subtitle and dubbing features, but plan limits, account rules, API and licensing details are not stated.

Limits: An AI judgement, not a measurement. An editor can override it.

Source links and check dates are in Sources and checks below.

Separate website checks

These checks do not add points to the SI Score. They inspect the website's HTML, not the product in use.

Basic website checks100/100

HTTPS: yes
Homepage answered with HTTP 200
Privacy policy link: found
Terms link: found
Contact or about page: found

We check that these pages exist, not what they say. Ownership and company details are not verified.

Checked Oct 14, 2026.

HTML accessibility checks94/100

Page language set: en
Mobile viewport: yes
Images with a text alternative: 81 of 99
Main heading (h1): yes

Automated checks on the homepage HTML only. This is not a full accessibility audit.

Checked Oct 14, 2026.

Homepage HTML response100/100

First byte after 29 ms
Homepage HTML loaded in 0.1 s
HTML size 831 KB

Measured once from our server. Images, scripts and your own connection are not included.

Checked Oct 14, 2026.

Trackers in homepage HTML64/100

Third-party trackers in the homepage code: Google Tag Manager, Microsoft Clarity, Bing Ads

Only the homepage HTML is checked. Trackers loaded later by scripts, and what the service does with your data, are not covered.

Checked Oct 14, 2026.

Page date hints90/100

Server says last modified: Fri, 25 Sep 2026 10:56:04 GMT

A copyright year is a weak sign of upkeep. It does not prove the content is current.

Checked Oct 14, 2026.

Policy links do not verify a company's conduct. An HTML response time is not application speed. Tracker and accessibility checks miss behavior after page load. Copyright dates do not prove product upkeep.

How the SI Score works →

Unconfirmed details may be unassessed, absent from the pages checked or temporarily unreadable. A missing price does not mean the service is free.

Sources and checks

Supporting pages for product usefulness, site facts, prices and separate website checks. Each record keeps its own date. Reading a page does not establish how well the product performs in use.

addsubtitle.ai/
- PricingSeen on the siteChecked Oct 14, 2026
  Try for Free
- PlatformsSeen on the siteChecked Oct 14, 2026
  Online, fast and accurate video translation & subtitles at your fingertips.
- Product usefulness evidenceChecked Oct 14, 2026
- Basic website checks (separate check)Checked Oct 14, 2026
- HTML accessibility checks (separate check)Checked Oct 14, 2026
- Homepage HTML response (separate check)Checked Oct 14, 2026
- Trackers in homepage HTML (separate check)Checked Oct 14, 2026
- Page date hints (separate check)Checked Oct 14, 2026
addsubtitle.ai/privacy-policy
- Basic website checks (separate check)Checked Oct 14, 2026
addsubtitle.ai/terms-of-use
- Basic website checks (separate check)Checked Oct 14, 2026

Checks without a source link

Free planUnknownChecked Oct 14, 2026
Sign-up requiredUnknownChecked Oct 14, 2026
APIUnknownChecked Oct 14, 2026
Open sourceUnknownChecked Oct 14, 2026

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