diff --git a/README.md b/README.md
index 2f01958eb..3cd3e904f 100644
--- a/README.md
+++ b/README.md
@@ -9,13 +9,13 @@
 
 **Aseprite** is a program to create animated sprites. Its main features are:
 
-* Sprites are composed of [layers & frames](http://www.aseprite.org/docs/timeline/) as separated concepts.
-* Support for [color profiles](https://www.aseprite.org/docs/color-profile/) and different [color modes](http://www.aseprite.org/docs/color/): RGBA, Indexed (palettes up to 256 colors), Grayscale.
+* Sprites are composed of [layers & frames](https://www.aseprite.org/docs/timeline/) as separated concepts.
+* Support for [color profiles](https://www.aseprite.org/docs/color-profile/) and different [color modes](https://www.aseprite.org/docs/color-mode/): RGBA, Indexed (palettes up to 256 colors), Grayscale.
 * [Animation facilities](https://www.aseprite.org/docs/animation/), with real-time [preview](https://www.aseprite.org/docs/preview-window/) and [onion skinning](https://www.aseprite.org/docs/onion-skinning/).
 * [Export/import](https://www.aseprite.org/docs/exporting/) animations to/from [sprite sheets](https://www.aseprite.org/docs/sprite-sheet/), GIF files, or sequence of PNG files (and FLC, FLI, JPG, BMP, PCX, TGA).
-* [Multiple editors](http://www.aseprite.org/docs/workspace/#drag-and-drop-tabs) support.
-* [Layer groups](https://imgur.com/x3OKkGj) for organizing your work, and [reference layers](https://imgur.com/UR2qXR9) for rotoscoping.
-* Pixel-art specific tools like [Pixel Perfect freehand mode](https://imgur.com/0fdlNau), [Shading ink](http://www.aseprite.org/docs/shading/), [Custom Brushes](https://twitter.com/aseprite/status/1196883990080344067), [Outlines](https://twitter.com/aseprite/status/1126548469865431041), [Wide Pixels](https://imgur.com/1yZKUcs), etc.
+* [Multiple editors](https://www.aseprite.org/docs/workspace/#drag-and-drop-tabs) support.
+* [Layer groups](https://imgur.com/x3OKkGj) for organizing your work, and [reference layers](https://twitter.com/aseprite/status/806889204601016325) for rotoscoping.
+* Pixel-art specific tools like [Pixel Perfect freehand mode](https://imgur.com/0fdlNau), [Shading ink](https://www.aseprite.org/docs/shading/), [Custom Brushes](https://twitter.com/aseprite/status/1196883990080344067), [Outlines](https://twitter.com/aseprite/status/1126548469865431041), [Wide Pixels](https://imgur.com/1yZKUcs), etc.
 * Other special drawing tools like [Pressure sensitivity](https://twitter.com/aseprite/status/1253770784708886533), [Symmetry Tool](https://twitter.com/aseprite/status/659709226747625472), [Stroke and Fill](https://imgur.com/7JZQ81o) selection, [Gradients](https://twitter.com/aseprite/status/1126549217856622597).
 * [Tiled mode](https://twitter.com/pixel__toast/status/1132079817736695808) useful to draw patterns and textures.
 * [Transform multiple frames/layers](https://twitter.com/aseprite/status/1170007034651172866) at the same time.
@@ -80,7 +80,7 @@ It tries to replicate some pixel-art algorithms:
 * [Pixel perfect drawing algorithm](http://deepnight.net/pixel-perfect-drawing/) by [Sébastien Bénard](https://twitter.com/deepnightfr) and [Carduus](https://twitter.com/CarduusHimself/status/420554200737935361).
 
 Thanks to [third-party open source projects](docs/LICENSES.md), to
-[contributors](http://www.aseprite.org/contributors/), and all the
+[contributors](https://www.aseprite.org/contributors/), and all the
 people who have contributed ideas, patches, bugs report, feature
 requests, donations, and help me to develop Aseprite.
 
@@ -98,11 +98,11 @@ This program is distributed under three different licenses:
    [observable](https://github.com/aseprite/observable),
    [ui](src/ui), etc.).
 2. You can request a special
-   [educational license](http://www.aseprite.org/faq/#is-there-an-educational-license)
+   [educational license](https://www.aseprite.org/faq/#is-there-an-educational-license)
    in case you are a teacher in an educational institution and want to
    use Aseprite in your classroom (in-situ).
 3. Steam releases are distributed under the terms of the
    [Steam Subscriber Agreement](http://store.steampowered.com/subscriber_agreement/).
 
 You can get more information about Aseprite license in the
-[FAQ](http://www.aseprite.org/faq/#licensing-&-commercial).
+[FAQ](https://www.aseprite.org/faq/#licensing-&-commercial).