Online Captioner

Media.io offers an end-to-end script-to-video pipeline that turns stories of up to 5,000 words into production-ready 720p HD videos with cast continuity, storyboards, and reusable assets. It supports episodic series creation with integrated post-production tools like AI enhancement, object removal,

CaptionCreator automatically transcribes and captions audio/video in over 50 languages, detecting input language and translating to English. It handles noisy and multilingual speech, supporting files up to 2 GB and offering unlimited processing for registered users.

Auto Caption AI instantly generates subtitles in 99+ languages, preserving full HD 1080p/60 fps video quality. Editors can adjust fonts, colors, placement, and use ready‑made or custom templates, with one‑click emoji insertion to enhance captions.

Generate one‑click captions for photos in any language. Upload an image, pick a target platform, and receive a tailored caption from a library of 100+ categories. Copy or download the text directly for use on social media.

Captions App is an AI tool that simplifies adding subtitles and captions to videos with auto-generation, translation, and customization options. It also offers AI dubbing in over 100 languages, enabling creators to enhance accessibility and engage a broader audience effortlessly.

AirCaption offers offline, privacy‑first speech‑to‑text transcription and captioning for audio/video across 67 languages. It supports batch processing, hotkeys, editable timings, and export to standard formats, aiding editors, podcasters, researchers, and educators.

Instasize's Instagram Captions Generator helps you create perfect captions for your posts with a wide range of categories to choose from.

Zubtitle automatically captions videos, offers brand‑style templates and editing tools, and outputs ready‑to‑post formats for TikTok, YouTube, and LinkedIn. It adds subtitles, chapter timestamps, watermarks, and AI‑generated post copy.

Imagetocaption.ai generates on‑brand captions, hashtags, and emojis for images and videos in 27 languages. Upload photos, carousels, or 2 GB/3‑min videos; instant copy‑to‑clipboard and brand‑voice matching. Useful for creators, agencies, merchants, and e‑commerce.

Zapcap is an AI-driven video creation tool that automates caption generation, adds trendy templates and sound effects, and selects b-rolls. It simplifies the video editing process to enhance viewer engagement and maximize social media discoverability.

Zeemo.ai is an automatic video captioning tool with features such as dynamic captioning, subtitle translation, batch-edit captioning, and video editing tools to create customized videos in 17 languages with a 98% accuracy rate.

Taption transcribes audio or video into text and subtitles in over 40 languages, auto‑labels speakers, offers translations, editable timelines, video trimming, memos, AI summaries, chapter markers, Q&A search, and exports to MP4, SRT, PDF, etc., with collaborative permissions.

Captionic is a free AI caption generator that creates subtitles for short videos, enhancing accessibility and engagement. It supports multiple languages and allows seamless integration, optimizing content for a wider audience and improved SEO.

CaptionGen is an AI tool that generates captions for images using advanced natural language processing technology and powerful chatbot technology.

The Image Caption Generator is a free online AI tool that generates captions and descriptions for images based on selected tones. You can use it to caption instagram, twitter or any social media post.

SyncWords delivers real‑time AI captioning, subtitling, and voice dubbing for live broadcasts and events, reproducing speaker voices via Vocalics cloning and translating into 30+ languages with minimal latency. It outputs broadcast‑grade captions in multiple formats and supports FCC compliance.

EasySub AI automatically transcribes and translates videos into over 150 languages. It supports MP4, MOV, AVI, MKV, MP3, WAV, and YouTube uploads, offers downloadable SRT/TXT/ASS files, an editor for fine‑tuning, and export presets for major social media platforms.

CapGen automatically generates descriptive captions for JPG, JPEG, PNG, or WEBP images using pretrained vision‑language models. It supports multiple languages, brand‑tone customization, and seamless editing, ready for social‑media use while safeguarding privacy.

Upload an image and receive AI‑generated captions in multiple languages and tones, tailored for chosen platforms, with hashtag suggestions. Easily copy, edit, or generate variants while ensuring privacy and server‑side processing.

Scriptm is an AI-powered transcription tool that provides quick login, custom subtitling, and supports multiple languages for media and entertainment workflows.

Clipto.ai is a private media management assistant that enables accurate AI transcription, supports various media sources, integrates with tools like Adobe Premiere, and allows smart searches for efficient content creation workflows, all without needing internet access.

Maestra transcribes and translates audio/video into searchable text, subtitles, and dubbed audio across 125+ languages, offering live transcription, subtitle editing, voice cloning/TTS, collaboration tools, content workflows, and APIs for integrations and automated publishing.

Video Transcriber AI is a tool that instantly converts videos from MP4, YouTube, or Zoom into text. It offers speaker recognition and accuracy modes for transcriptions up to 1GB, with no sign-up required.

Animaker Subtitle Generator auto‑transcribes audio, adds and edits subtitles with a click, supports 20+ animated styles, translates to 100+ languages, allows manual adjustments or .srt/.vtt uploads, and exports videos or subtitle files for broader use.

Kapwing is an online video platform offering drag‑and‑drop editing for trimming, layering, overlays, and team collaboration. Its audio tools record, edit, and clean tracks; subtitler auto‑generates captions in 40+ languages.

InShot is a mobile video editor that lets users cut, trim, and layer clips, auto‑generate multilingual captions, add music, intros/outros, and apply AI‑driven, 3D, glitch, and lens transitions, text, stickers, and picture‑in‑picture overlays.

Transcri is an AI transcription and subtitle generation tool that supports over 50 languages. It allows users to upload various audio formats, offers built-in correction, project collaboration, and multiple export options for easy integration into projects.

Caption My Photos is an AI tool that generates captions for up to 50 images at once. It lets users customize tone, style, and hashtags, delivering ready‑to‑post text for Instagram, blogs, yearbooks, and other visual media, speeding workflow for creators.

SubtitleBee automatically generates and syncs subtitles for video and audio files, supports on‑screen editing, customization, and multilingual translation, offers multiple export formats, and provides social‑media cropping for creators and podcasters, enabling accessible content across platforms.

L21 AI Proofreader enhances written content accuracy and contextuality of live events.

SubEasy AI delivers near‑perfect transcription and multilingual subtitles for video and audio, supporting 100 languages with 99 % accuracy. It offers dubbing, animated captions, speaker ID, OCR extraction, audio splitting, and export to VTT/SRT for social media publishing.

FlexClip is an online video editor with templates, resources, and powerful tools to create and edit videos for various purposes, as well as integration with royalty-free stock media providers and easy social media sharing.

TurboScribe is an AI-powered transcription tool offering ultra-fast conversion of audio and video files to text. It supports over 98 languages, handles uploads up to 10 hours long, and features speaker recognition for meetings, interviews, and podcasts.

Klap automatically extracts key moments from long videos, reframes them for vertical formats, adds multilingual subtitles, and lets you customize branding. Upload files or YouTube links, then share or schedule ready‑to‑publish clips across TikTok, Instagram, LinkedIn, and YouTube.

Bytecap automatically edits short‑form videos, adding captions, B‑roll, dynamic zooms, and subtitles in 40+ languages. It extracts engaging moments, removes filler words, generates thumbnails, and publishes polished clips across TikTok, Reels, and Shorts.

Crayo is a browser‑based AI video editor that lets creators upload or link clips, choose from 15+ subtitle styles, generate voiceovers, enhance speech, remove backgrounds, and produce short‑form videos in seconds, with tools for clipping, split‑screen, compression, and audio balance.

Submagic automates short‑form video editing, offering multilingual captions, text‑based trimming, AI‑powered features like auto‑zoom and eye‑contact correction, and direct multi‑platform publishing up to 4K@60fps, cutting editing time by up to 90%.

Pictori is an AI-powered video creation tool designed for bloggers, social media managers, YouTubers, course creators, coaches and more. It offers auto-captions, transcription, summarization, and requires no technical skills or software downloads.

Videofa.st automates subtitling for short videos, providing accurate captions in 99 languages. It enhances accessibility, engagement, and maintains brand aesthetics with customizable, professional-quality outputs, compatible with various video formats and easy to integrate into workflows.

Speakflow is a web‑based teleprompter that lets users scroll scripts by voice or manually with real‑time speed control. It offers autosave editing, collaborative drafting, device‑synchronization, 1080p browser recording, and hardware compatibility.

Transkriptor converts audio/video files into editable, timestamped transcripts in 100+ languages, auto‑detecting speakers. It extracts summaries, action items, and sentiment, and integrates via Zapier with CRMs and PM tools for automated workflow routing.

CapIt FAQs is an AI tool that generates tailored social media captions swiftly. It offers 5 distinct caption choices based on image tones selected, with upcoming features including hashtag suggestions and direct caption creation for optimized post content.

aivideosummarizer.io is an AI tool that converts videos (from uploads or links) into concise summaries, full transcripts, and chapter markers. It supports multiple formats and languages, generating editable outputs like study outlines and mind maps for faster content review.

Akkadu delivers real‑time, multilingual AI translations and captions for live meetings, events, and streams on Zoom, Teams, Webex, YouTube Live, and Facebook Live. It lets users choose engines, add glossaries, customize fonts, apply safety filters, capture audio via OBS, and store transcripts online

Flowjin AI Clip Maker extracts share-worthy moments from long videos and podcasts, creating 10+ short, captioned clips with platform‑specific titles, hashtags, and CTAs. It offers editing, templating, and one‑click scheduling for LinkedIn, YouTube, X, Instagram Reels, TikTok, and Facebook.

Cockatoo converts audio and video files to text in seconds, supporting 90+ languages. Users drag‑and‑drop files, and the service auto‑extracts audio, offers export to SRT, DOCX, PDF, TXT, and an in‑browser editor, with secure data handling.

YouTube sumamry chrome extension is a YouTube video summary tool developed by Glasp Inc., currently in beta testing and requires installation on Chrome or Safari browsers along with sign-up.

Voscribe automatically transcribes audio and video with over 95% accuracy, converting 15 minutes of content in about one minute. Transcripts sync to media and can export SRT subtitles, simplifying editing for podcasters and video producers.

Rask is an AI-powered localization tool that offers video translation, captioning, subtitling, voice over, and dubbing services in multiple languages, with a 14-day free trial for businesses, content creators, and educators.

SceneXplain converts images and videos into captions, summaries, alt‑text, and JSON using multimodal AI. It supports 100+ languages, visual Q&A, batch processing of 128 images, and provides a REST API for web and mobile integration, enhancing accessibility and data extraction.