Lifehacker social media editor Alex Bedder
If you want to tweak your Twitter avatar or Facebook pic, but avoid all the well-trod Instagram filters, try tossing your photo into Duotone Effect Generator. With this simple photo editor you can convert your photo into two colours of your choice, or presets like Spotify, Fire Engine, or Gryffindor.
You can tweak the effect with the brightness and contrast panel. Then just download and toss back into your profile, and let everyone guess whether you're supporting some political cause, or hiding a pimple, or identifying as polyamorous.
Duotone is a fairly new editor, recently posted on Product Hunt -- where you'll usually find mobile app-based photo filters. Other quick web options include cssFilters, Pixlr-o-matic, Dreamscope, LunaPic's colour tint, or the free version of BeFunky. We'd love to see your favourite one-task photo editor. Because sometimes you just can't be bothered to fire up Photoshop.