Palette

Overview

Choose from more than 21 web filters, then refine colors with descriptions or keywords. That gives you a way to guide the result rather than accept a single automatic treatment. Palette also supports batch processing and API access, extending the workflow beyond individual edits. The free option is useful for previews, but its 500×500-pixel, watermarked output is not a finished export.

Key features

• Filter and prompt controls: Web users can choose among more than 21 filters and fine-tune colors with descriptions or keywords. The API adds automated and custom prompts, reference images, and up to 120 prompts for one image. That makes Palette a stronger fit for users who need variations or want to steer results programmatically than for anyone seeking a simple one-click conversion.
• Batch processing and API: Palette supports batch processing and says a simple script can colorize over 1 million images per day. That claim makes the API relevant to high-volume workflows, though the API platform has moved to RapidAPI, a practical integration consideration. Images are limited to 4K resolution and 10 MB each.
• Video API: A separate beta API colorizes video frames in SD, Full-HD, and 4K. Its beta status makes it worth considering for exploratory workflows, not treating as a settled production dependency.
• Integrations and data rights: Palette documents connections with iPhone Photos, Google Drive, Dropbox, and other photo apps. A Windows desktop application from Covenant uses Palette's colorization engine. Uploaded files are securely processed and deleted shortly after results are provided; users retain ownership of created images and videos and may use them commercially without restrictions.

Pricing

Palette is freemium, with a free trial and two paid options. The plans trade off preview quality, credit volume, and commitment length.

• Try it for free — 0.00 USD per free: Includes one free trial credit and unlimited color previews, but previews are resized to 500×500 pixels and carry a watermark. It is suited to exploring filters before paying, not producing clean, high-resolution files.
• Pay once — 49.00 USD per once: A one-time payment buys 75 credits, supports images up to 5000×5000 pixels, and provides access for two years, with limited ads. This suits occasional users who prefer not to renew, but the credit allotment is finite.
• Subscribe — 72.00 USD per year: Billed at $6/month = $72 year, this plan provides 480 credits per year, supports images up to 5000×5000 pixels, and refreshes credits monthly or yearly. Rollover is capped at five times the monthly plan amount. It better suits recurring use, though credit refresh and rollover terms make usage cadence relevant.

Palette provides an FAQ and a contact-us link for support.

Platforms

Palette is available through web and API, with a Windows desktop application using its colorization engine. It also documents integrations with iPhone Photos, Google Drive, Dropbox, and other photo apps. The video-frame API is a separate beta offering.

Who it's for

Palette fits photographers and image teams that want to guide colorization rather than take a single automatic result, and developers who need prompt controls or batch processing. Its 10 MB per-image limit and 4K API ceiling may rule it out for larger source files. The free preview works for evaluation; regular production use means budgeting credits.

Pros and cons

• Pro: More than 21 web filters plus descriptions and keywords provide several ways to steer color choices.
• Pro: API prompt automation, reference images, and up to 120 prompts per image support controlled variation in developer workflows.
• Pro: Batch processing and a stated capacity of over 1 million images per day with a simple script point to high-volume use.
• Con: Free previews are watermarked and limited to 500×500 pixels, so they cannot serve as finished outputs.
• Con: Paid use is credit-based, with the one-time plan limited to 75 credits and subscription rollover capped.
• Con: The 10 MB image limit and beta status of the video API constrain some production workflows.

Alternatives

For other options, compare AI Image Colorizers, AI Photo Colorization Software, and AI Image Enhancers.

• VanceAI Photo Colorizer is another freemium web, API, and Windows option; its free tier offers 10 credits and online JPG or PNG uploads up to 5 MB.
• PicWish Photo Colorizer supports Android, iOS, macOS, web, Windows, and API; its online colorizer offers free coloring and downloads, with bulk editing up to 30 images.
• SnapOtter is a free, open-source option with Linux, macOS, self-hosted, web, and API platforms; its Open Source plan says it includes more than 200 tools across five modalities and unlimited usage.
• Colorize.cc offers a one-time Basic plan at 12.00 USD per once, with 50 photo processing and colorization up to 4K.
• Colorize by Photomyne is a mobile alternative for Android and iOS, with limited free colorizations and a yearly membership at 59.99 USD per year after a three-day free trial.
• Hotpot AI Photo Colorizer is a web alternative with free access for exploration; commercial use and advanced settings require credits.
• ImageColorizer supports Android, iOS, macOS, web, and Windows; its free plan includes 50 credits per month, single processing, ads, and all AI features.
• Colorize Photo is a free web option with no signup, no watermark, and no limit on the number of photos.

Verdict

Choose Palette if you need photo colorization with meaningful filter and prompt control, especially in a batch or API workflow. Its main advantage is the range of ways to direct results; look elsewhere if you need unrestricted finished previews, files above 10 MB, or a video API beyond beta.