Inkscape uses standard SVG groups to make layers by simply adding a property: "inkscape:groupmode = layer" to a group's properties. Outside of Inkscape, like say, in a pdf reader, they are just regular SVG groups. You can collapse the layers by going to each layer in turn starting with the topmost, Edit -> Selecting All (CONTROL A), grouping the layer Object -> Group (CONTROL+G), then Layer -> Move Selection to layer Below (SHIFT + PAGE DOWN).

When you export to a format like .png Inkscape will convert the image from a collection of vectors to pixel values. If you do this via File -> Export PNG Image the default resolution will be used (usually 90 dpi). However you can open up an export dialogue that will allow you to edit more of the settings for exporting by pressing SHIFT + CONTROL + E

Most OS's use 72dpi for their own GUI screen output. So if you intend your image to be viewed electronically, as part of a webpage, 100 dpi will look very crisp whilst not causing too much loading delay.

For paper 300 - 600 dpi will look crisp enough on A4. Ideally what your looking for is a balance between file size and resolution

Inkscape uses standard SVG groups to make layers by simply adding a property: "inkscape:groupmode = layer" to a group's properties. Outside of Inkscape, like say, in a pdf reader, they are just regular SVG groups. You can collapse the layers by going to each layer in turn starting with the topmost, Edit -> Selecting All (CONTROL A), grouping the layer Object -> Group (CONTROL+G), then Layer -> Move Selection to layer Below (SHIFT + PAGE DOWN).

When you export to a format like .png Inkscape will convert the image from a collection of vectors to pixel values. If you do this via File -> Export PNG Image the default resolution will be used (usually 90 dpi). However you can open up an export dialogue that will allow you to edit more of the settings for exporting by pressing SHIFT + CONTROL + E

Most OS's use 72dpi for their own GUI screen output. So if you intend your image to be viewed electronically, as part of a webpage, 100 dpi will look very crisp no noticible loading delay.

For paper 300 - 600 dpi will look crisp enough on A4. Ideally what your looking for is a balance between file size and resolution

Inkscape uses standard SVG groups to make layers by simply adding a property: "inkscape:groupmode = layer" to a group's properties. Outside of Inkscape, like say, in a pdf reader, they are just regular SVG groups. You can collapse the layers by going to each layer in turn starting with the topmost, Edit -> Selecting All (CONTROL A), grouping the layer Object -> Group (CONTROL+G), then Layer -> Move Selection to layer Below (SHIFT + PAGE DOWN).

When you export to a format like .png Inkscape will convert the image from a collection of vectors to pixel values. If you do this via File -> Export PNG Image the default resolution will be used (usually 90 dpi). However you can open up an export dialogue that will allow you to edit more of the settings for exporting by pressing SHIFT + CONTROL + E

Most OS's use 72dpi for their own GUI screen output. SO if you intend your image to be viewed electronically 100 dpi will look very crisp whilst not causing too much processor overhead.

For paper 300 - 600 dpi will look crisp enough on A4. Ideally what your looking for is a balance between file size and resolution

Inkscape uses standard SVG groups to make layers by simply adding a property: "inkscape:groupmode = layer" to a group's properties. Outside of Inkscape, like say, in a pdf reader, they are just regular SVG groups. You can collapse the layers by going to each layer in turn starting with the topmost, Edit -> Selecting All (CONTROL A), grouping the layer Object -> Group (CONTROL+G), then Layer -> Move Selection to layer Below (SHIFT + PAGE DOWN).

When you export to a format like .png Inkscape will convert the image from a collection of vectors to pixel values. If you do this via File -> Export PNG Image the default resolution will be used (usually 90 dpi). However you can open up an export dialogue that will allow you to edit more of the settings for exporting by pressing SHIFT + CONTROL + E

Most OS's use 72dpi for their own GUI screen output. So if you intend your image to be viewed electronically, as part of a webpage, 100 dpi will look very crisp whilst not causing too much loading delay.

For paper 300 - 600 dpi will look crisp enough on A4. Ideally what your looking for is a balance between file size and resolution