If you intended to link an image it is not coming up. An alternative to deleting quests is to just finish them. Many quests are pretty short in nature. I've never deleted a quest on any character and the most quests I have sitting on any one character is 26. So I'm able to pick up 37 bounties on that character which for me at least is way more free spots than I'll ever use at once for bounties. I also never pick up more bounties than I expect to complete within a couple hours of play time. If you were trying to share a picture of your quests inventory in your post it is not coming through (shows as a broken link). I suggest taking screenshots and loading them to imgur.com or twitter.com and sharing the links here. Or alternatively you can go into your bungie profile and enable the feature that allows other users to see your non-equipped inventory. Then we can view your pursuits and quests via the API on sites like d2checklist. But, without knowing what you have, easy ones I'd suggest are quests that you've completed on one character for a weapon and thus don't need it to be done on others. Examples would be Legend of Acrius, The Last Word, Thorn, Riskrunner, Sturm, Wish-Ender, Malfeasance, Ace of Spades, Chaperone, Lumina, Polaris Lance, Jotunn, Le Monarque, Divinity, Devil's Ruin, The Fourth Horseman, Sleeper Simulant, Truth, Deathbringer, Xenophage, Leviathan's Breath. In addition to the above duplicate exotic quests, if there are any Moon quests you have that start with "Essence" in the name and award weapons you already have or have no interest in, feel free to delete those as well. Any you've already acquired can be picked up from the vendor on the Moon later anyway. Personally, any quests you have that unlock game content or involve progressing a campaign I would make priority to complete first.