Free tools for AI photo and video creators

Prompt helpers, SEO writing tools, calculators and size guides. They run in your browser, so your text stays on your device.

Prompt tools

Build, tidy and compare prompts

AI Prompt Generator

Build a structured AI image or video prompt from a subject, style, camera, lighting and mood. Free, instant, copy-ready.

AI Prompt Optimizer

Paste any AI image or video prompt and see it split into subject, environment, action, camera, lighting, style and more, with gaps flagged.

Prompt Comparison Tool

Compare an original and improved AI prompt side by side. Added and removed words are highlighted, with a plain-language summary of what changed.

SEO tools for AI creators

Titles, alt text, hashtags, slugs and file names

AI Image Alt Text Generator

Generate SEO-friendly alt text, image title, caption and description for AI-generated images.

AI Video Title Generator

Generate YouTube and short-form video title ideas with character counts. Free title generator for AI video creators.

AI Video Description Generator

Generate a video description with a strong first line, prompt credit, hashtags and optional AI disclosure for YouTube and social platforms.

AI Hashtag Generator

Generate relevant hashtags for AI art and AI video posts on Instagram, TikTok, YouTube and X, based on topic, platform and audience.

AI Thumbnail Title Generator

Generate short thumbnail text ideas of four words or fewer for YouTube and social videos.

Prompt Keyword Generator

Generate keyword ideas and questions around an AI prompt topic, such as “prompt ideas”, “for beginners” and “copy and paste”.

Prompt Slug Generator

Turn a prompt or page title into a clean, SEO-friendly URL slug. Removes stop words and special characters.

Image File Name Generator

Generate descriptive, SEO-friendly file names for AI images and videos, with size and extension.

Creator calculators

Aspect ratio, resolution, duration, fps, bitrate and file size

Aspect Ratio Calculator

Find the simplest aspect ratio for any width and height, or calculate the missing dimension for a target ratio.

Image Resolution Calculator

Calculate megapixels and print size for an image, and the upscale needed to reach a target width.

Video Duration Calculator

Work out the total length and frame count of a video made from several AI clips, including overlaps for transitions.

FPS Calculator

Calculate slow motion speed, frame duration and new clip length when converting between frame rates.

Video Bitrate Calculator

Calculate video file size from bitrate and duration, or the bitrate needed to fit a target file size. Includes YouTube’s recommended upload bitrates.

Image File Size Calculator

Estimate the uncompressed and typical compressed file size of an image by pixel size and format. Rough estimates for planning uploads.

Size guides

Current platform sizes, with the date we checked