TransMonkey

Four translators and two transcription tools share one credit balance

The site splits into a document translator, an image translator, a video translator and a plain text translator, plus audio transcription and an AI subtitle generator. The dozens of single-purpose pages (PDF, manga, YouTube and so on) lead into these same tools.

• Documents: the FAQ lists PDF, DOCX, PPTX, XLSX, EPUB, TXT, HTML, Markdown, SRT, CSV, JSON, XLIFF, PO and OpenDocument files, among others. Scanned PDFs go through OCR first. The upload box accepts files up to 500MB, and the site quotes a ceiling of 1,500K characters per document.
• Images: PNG, JPG and WEBP up to 10MB. The original text is removed and the translation drawn over the same background, and images can be processed in bulk.
• Video: transcription, translated subtitles and an optional dubbed voice-over from a set of preset synthetic voices, with the background music left in place. You can upload a file or paste a YouTube link.
• Audio and subtitles: transcription of MP3, MP4, MOV, WAV and similar files up to 1,024MB and 180 minutes, exported as VTT, CSV or TXT. The subtitle generator caps files at 60 minutes.

There are also Chrome, Google Workspace and YouTube extensions, so Google Docs, Slides and Sheets can be translated without downloading them first.

The engine is other companies’ models, which the site states openly

TransMonkey doesn’t claim its own translation model. Its pages say translation runs on large language models from the ChatGPT, Claude and Gemini families, and that speech uses OpenAI’s Whisper and text-to-speech models. The FAQ is honest about the cost: LLM translation is slower than classic machine translation, so a document can take from a few seconds to around ten minutes, and a video up to about an hour. The FAQ also recommends human review for contracts and for subtitles meant for public use. We’d extend that to anything you publish.

One thing to read with care: the marketing figures don’t agree with each other. The homepage claims more than 100,000 professionals, 10K+ customers and 98% accuracy; the About page says 50K+ active users and a 99.9% accuracy rate. Language counts range from “100+” on the pricing page to “130+” elsewhere, and only “over 50” for audio transcription. Treat all of these as the vendor’s claims.

Pricing is credit-based, and one credit buys very different amounts

At review time the pricing page set one credit equal to one minute of video, one image, or 500 characters of document text. New accounts get free trial credits, though the site doesn’t say how many. After that there are two routes:

• Pay as you go: one-off packs that never renew, from $6 for 50 credits up to $99 for 4,000 credits.
• Pro: 500 credits a month for $12 billed monthly, or $99 a year (about $8.30 a month). That covers roughly 500 video minutes, 500 images or 250,000 document characters per month, plus scanned-PDF support.

The 500-character document rate is the number to check before you subscribe. A 50-page report can easily exceed 100,000 characters, which is 200 credits or more, so heavy document users will spend credits much faster than people translating images. Payment is through PayPal. Under the refund FAQ, you can ask for a refund within three days of your first purchase if you haven’t used more than 30 credits.

Arabic: a real target language and an RTL interface, with rough edges

Arabic shows up in three places. First, it’s in the language list of every translator we checked, and the FAQs name it among the supported languages for documents, video, images and transcription. Second, the site has a full Arabic version at /ar, served right to left with the page language set to Arabic. Third, Hebrew is offered too, so right-to-left text isn’t an afterthought.

The Arabic interface, however, reads as machine-translated in places. Some labels are awkward or plainly wrong; the menu entry for the AI subtitle tool, for example, comes out as a phrase meaning “AI text translation”. More importantly, the site doesn’t say how an English PDF is mirrored when translated into Arabic: whether tables flip, whether text boxes grow to fit, or how mixed Arabic and English lines are ordered. We couldn’t verify it from the site, so test a short sample document with your free credits before committing a real file.

Who it suits, and who should look elsewhere

TransMonkey makes most sense for people who receive formatted files in one language and need the same file back in another: students with foreign-language PDFs, teams localising slide decks or spreadsheets, manga and comic readers, and creators who want translated subtitles or a quick dubbed version of a YouTube video. Having documents, images and video under one balance is its real advantage.

It’s a weaker fit in three cases. If you only translate short passages, any free text translator does that job without a credit balance. If the translation carries legal or medical weight, the vendor itself advises human review, so you’ll be paying a translator anyway. And if your main need is long documents into Arabic, the character-based pricing and the unverified RTL layout handling both argue for a careful trial before you buy a pack or a subscription.