Can I use Forge if I have Optifine?

[Kippenkaasbaas]

I've allways been using texture packs and have Optifine installed.

Now I wanna instal mods and use both Forge and Optifine.

 

But everywhere I look people just say ''Instal Forge BEFORE you install Optifne''.

But I have Optifine installed already and there is no uninstall option. So is there a way to still use both?

[MenelBOT]

You can just put the Optifine.jar file into the mods folder just as you would do with mods

[LowTechRider]

But only upto 1.14.4, since 1.15.2 is not Forge compatible?

Spoiler

OptiFine 1.15.2_HD_U_G1_pre7
 - not working: shaders, antialiasing, anisotropic filtering and render regions
 - fixed connected glass panes
 - fixed CTM overlays
 - fixed Smart Animations for GUI overlay
 - fixed custom lightmap affecting the GUI
 - fixed disabled fog to affect all entities and block entities
 - fixed option sliders registering outside clicks
 - fixed CEM for baby horse and llama
 - fixed chunks not loading due to configured shaders
 - fixed Random Entities depending on view distance
 - fixed Custom Sky
 - fixed fog in the Nether 
 - fixed Smart Animations for entities on fire 
 - fixed option Graphics depending on Dropped Items
 - fixed Natural Textures and Better Snow
 - fixed visual artifacts when manually placing blocks
 - fixed buttons in Chat Settings screen
 - fixed render distance above 32
 - fixed lighting of magma blocks
 - fixed handheld item flicker with dynamic lights
 - fixed dynamic lights for block entities and particles
 - updated to 1.15.2
 - not compatible with Forge
(21.02.2020)

 

[larsgerrits]

Specific Optifine version work with specific Forge version, decided and chosen by Optifine. Most Minecraft versions, there's not even a compatible version.

Edited February 24, 2020 by larsgerrits