diff --git a/docs/source/overview.rst b/docs/source/overview.rst
index ce8d257..7bf2f13 100644
--- a/docs/source/overview.rst
+++ b/docs/source/overview.rst
@@ -429,14 +429,15 @@ synthesis and place&route.
 ChipDB
 ~~~~~~
 
-The IceStorm Makefile builds and installs two files: chipdb-1k.txt and
-chipdb-8k.txt. This files contain all the relevant information for
-arachne-pnr to place&route a design and create an IceStorm ASCII file
+The IceStorm Makefile builds and installs several files: chipdb-1k.txt.gz,
+chipdb-384.txt.gz, chipdb-5k.txt.gz, chipdb-8k.txt.gz, chipdb-lm4k.txt.gz,
+and chipdb-u4k.txt.gz. This files contain all the relevant information for
+nextpnr-pnr to place&route a design and create an IceStorm ASCII file
 for the placed and routed design.
 
-*IcePack/IceUnpack, IceBox, IceProg, IceTime, and IcePLL are written by
-Claire Wolf. IcePack/IceUnpack is based on a reference implementation
-provided by Mathias Lasser. IceMulti is written by Marcus Comstedt.*
+*IcePack/IceUnpack, IceBox, IceProg, IceTime, and IcePLL were originally
+written by Claire Wolf. IcePack/IceUnpack is based on a reference implementation
+provided by Mathias Lasser. IceMulti was created by Marcus Comstedt.*
 
 Where do I get support or meet other IceStorm users?
 ----------------------------------------------------
@@ -449,13 +450,13 @@ stackoverflow <http://stackoverflow.com/questions/tagged/verilog>`__
 instead.
 
 For general discussions go to the `Yosys
-Subreddit <https://www.reddit.com/r/yosys/>`__ or `#yosys on freenode
-IRC <http://webchat.freenode.net/?channels=yosys>`__.
+Subreddit <https://www.reddit.com/r/yosys/>`__ or `#yosys on the Libera.Chat
+IRC <https://web.libera.chat/?channels=#yosys>`__.
 
 If you have a bug report please file an issue on github. (`IceStorm
 Issue Tracker <https://github.com/YosysHQ/icestorm/issues>`__, `Yosys
-Issue Tracker <https://github.com/YosysHQ/yosys/issues>`__, `Arachne-PNR
-Issue Tracker <https://github.com/YosysHQ/arachne-pnr/issues>`__)
+Issue Tracker <https://github.com/YosysHQ/yosys/issues>`__, `nextpnr
+Issue Tracker <https://github.com/YosysHQ/nextpnr/issues>`__)
 
 .. _docs:
 
diff --git a/icebox/Makefile b/icebox/Makefile
index ffe439a..d11e190 100644
--- a/icebox/Makefile
+++ b/icebox/Makefile
@@ -6,31 +6,37 @@ else
   SED_I = sed -i ''
 endif
 
-all: chipdb-384.txt chipdb-1k.txt chipdb-8k.txt chipdb-5k.txt chipdb-lm4k.txt chipdb-u4k.txt
+all: chipdb-384.txt.gz chipdb-1k.txt.gz chipdb-8k.txt.gz chipdb-5k.txt.gz chipdb-lm4k.txt.gz chipdb-u4k.txt.gz
 
-chipdb-384.txt: icebox.py iceboxdb.py icebox_chipdb.py
+chipdb-384.txt.gz: icebox.py iceboxdb.py icebox_chipdb.py
 	$(PYTHON3) icebox_chipdb.py -3 > chipdb-384.new
 	mv chipdb-384.new chipdb-384.txt
+	gzip -9 chipdb-384.txt
 
-chipdb-1k.txt: icebox.py iceboxdb.py icebox_chipdb.py
+chipdb-1k.txt.gz: icebox.py iceboxdb.py icebox_chipdb.py
 	$(PYTHON3) icebox_chipdb.py > chipdb-1k.new
 	mv chipdb-1k.new chipdb-1k.txt
+	gzip -9 chipdb-1k.txt
 
-chipdb-5k.txt: icebox.py iceboxdb.py icebox_chipdb.py
+chipdb-5k.txt.gz: icebox.py iceboxdb.py icebox_chipdb.py
 	$(PYTHON3) icebox_chipdb.py -5 > chipdb-5k.new
 	mv chipdb-5k.new chipdb-5k.txt
+	gzip -9 chipdb-5k.txt
 
-chipdb-u4k.txt: icebox.py iceboxdb.py icebox_chipdb.py
+chipdb-u4k.txt.gz: icebox.py iceboxdb.py icebox_chipdb.py
 	$(PYTHON3) icebox_chipdb.py -u > chipdb-u4k.new
 	mv chipdb-u4k.new chipdb-u4k.txt
+	gzip -9 chipdb-u4k.txt
 
-chipdb-lm4k.txt: icebox.py iceboxdb.py icebox_chipdb.py
+chipdb-lm4k.txt.gz: icebox.py iceboxdb.py icebox_chipdb.py
 	$(PYTHON3) icebox_chipdb.py -4 > chipdb-lm4k.new
 	mv chipdb-lm4k.new chipdb-lm4k.txt
+	gzip -9 chipdb-lm4k.txt
 
-chipdb-8k.txt: icebox.py iceboxdb.py icebox_chipdb.py
+chipdb-8k.txt.gz: icebox.py iceboxdb.py icebox_chipdb.py
 	$(PYTHON3) icebox_chipdb.py -8 > chipdb-8k.new
 	mv chipdb-8k.new chipdb-8k.txt
+	gzip -9 chipdb-8k.txt
 
 check: all
 	$(PYTHON3) tc_xlat_netnames.py
@@ -38,18 +44,18 @@ check: all
 	$(PYTHON3) tc_logic_xpr.py
 
 clean:
-	rm -f chipdb-1k.txt chipdb-8k.txt chipdb-384.txt chipdb-5k.txt chipdb-lm4k.txt chipdb-u4k.txt
+	rm -f chipdb-1k.txt.gz chipdb-8k.txt.gz chipdb-384.txt.gz chipdb-5k.txt.gz chipdb-lm4k.txt.gz chipdb-u4k.txt.gz
 	rm -f icebox.pyc iceboxdb.pyc
 
 install: all
 	mkdir -p $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox
 	mkdir -p $(DESTDIR)$(PREFIX)/bin
-	cp chipdb-384.txt    $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox/
-	cp chipdb-1k.txt     $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox/
-	cp chipdb-8k.txt     $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox/
-	cp chipdb-5k.txt     $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox/
-	cp chipdb-u4k.txt    $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox/
-	cp chipdb-lm4k.txt   $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox/
+	cp chipdb-384.txt.gz   $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox/
+	cp chipdb-1k.txt.gz    $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox/
+	cp chipdb-8k.txt.gz    $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox/
+	cp chipdb-5k.txt.gz    $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox/
+	cp chipdb-u4k.txt.gz   $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox/
+	cp chipdb-lm4k.txt.gz  $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox/
 	cp icebox.py         $(DESTDIR)$(PREFIX)/bin/$(subst -,_,$(PROGRAM_PREFIX))icebox.py
 	cp iceboxdb.py       $(DESTDIR)$(PREFIX)/bin/$(subst -,_,$(PROGRAM_PREFIX))iceboxdb.py
 	cp icebox_chipdb.py  $(DESTDIR)$(PREFIX)/bin/$(PROGRAM_PREFIX)icebox_chipdb$(PY_EXE)
@@ -97,11 +103,11 @@ uninstall:
 	rm -f $(DESTDIR)$(PREFIX)/bin/$(PROGRAM_PREFIX)icebox_maps$(PY_EXE)
 	rm -f $(DESTDIR)$(PREFIX)/bin/$(PROGRAM_PREFIX)icebox_vlog$(PY_EXE)
 	rm -f $(DESTDIR)$(PREFIX)/bin/$(PROGRAM_PREFIX)icebox_stat$(PY_EXE)
-	rm -f $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox/chipdb-384.txt
-	rm -f $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox/chipdb-1k.txt
-	rm -f $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox/chipdb-8k.txt
-	rm -f $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox/chipdb-lm4k.txt
-	rm -f $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox/chipdb-u4k.txt
+	rm -f $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox/chipdb-384.txt.gz
+	rm -f $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox/chipdb-1k.txt.gz
+	rm -f $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox/chipdb-8k.txt.gz
+	rm -f $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox/chipdb-lm4k.txt.gz
+	rm -f $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox/chipdb-u4k.txt.gz
 	-rmdir $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox
 
 .PHONY: all check clean install uninstall
diff --git a/icebox/icebox_vlog.py b/icebox/icebox_vlog.py
index 4799037..339b1c8 100755
--- a/icebox/icebox_vlog.py
+++ b/icebox/icebox_vlog.py
@@ -18,6 +18,7 @@
 import icebox
 from icebox import re_match_cached, re_sub_cached, re_search_cached
 import getopt, sys, re, os
+import zlib
 
 strip_comments = False
 strip_interconn = False
@@ -386,10 +387,11 @@ def seg_to_net(seg, default=None):
 
 if lookup_symbols:
     text_func.append("// Debug Symbols")
-    with open("/usr/local/share/icebox/chipdb-%s.txt" % ic.device, "r") as f:
+    with open("/usr/local/share/icebox/chipdb-%s.txt.gz" % ic.device, "rb") as f:
+        lines = zlib.decompress(f.read()).decode('utf-8').splitlines()
         current_net = -1
         exported_names = dict()
-        for line in f:
+        for line in lines:
             line = line.split()
             if len(line) == 0:
                 pass
diff --git a/icetime/Makefile b/icetime/Makefile
index 1dfc926..1dc5cef 100644
--- a/icetime/Makefile
+++ b/icetime/Makefile
@@ -11,18 +11,18 @@ all: $(PROGRAM_PREFIX)icetime$(EXE)
 CHIPS=lp384 lp1k lp8k hx1k hx8k up5k u4k
 
 ifeq ($(EXE),.js)
-$(PROGRAM_PREFIX)icetime$(EXE): | share/$(CHIPDB_SUBDIR)/chipdb-384.txt share/$(CHIPDB_SUBDIR)/chipdb-1k.txt share/$(CHIPDB_SUBDIR)/chipdb-8k.txt share/$(CHIPDB_SUBDIR)/chipdb-5k.txt
+$(PROGRAM_PREFIX)icetime$(EXE): | share/$(CHIPDB_SUBDIR)/chipdb-384.txt.gz share/$(CHIPDB_SUBDIR)/chipdb-1k.txt.gz share/$(CHIPDB_SUBDIR)/chipdb-8k.txt.gz share/$(CHIPDB_SUBDIR)/chipdb-5k.txt.gz
 
-share/$(CHIPDB_SUBDIR)/chipdb-384.txt: ../icebox/chipdb-384.txt
+share/$(CHIPDB_SUBDIR)/chipdb-384.txt.gz: ../icebox/chipdb-384.txt.gz
 	mkdir -p share/$(CHIPDB_SUBDIR)
 	cp $< $@
-share/$(CHIPDB_SUBDIR)/chipdb-1k.txt: ../icebox/chipdb-1k.txt
+share/$(CHIPDB_SUBDIR)/chipdb-1k.txt.gz: ../icebox/chipdb-1k.txt.gz
 	mkdir -p share/$(CHIPDB_SUBDIR)
 	cp $< $@
-share/$(CHIPDB_SUBDIR)/chipdb-8k.txt: ../icebox/chipdb-8k.txt
+share/$(CHIPDB_SUBDIR)/chipdb-8k.txt.gz: ../icebox/chipdb-8k.txt.gz
 	mkdir -p share/$(CHIPDB_SUBDIR)
 	cp $< $@
-share/$(CHIPDB_SUBDIR)/chipdb-5k.txt: ../icebox/chipdb-5k.txt
+share/$(CHIPDB_SUBDIR)/chipdb-5k.txt.gz: ../icebox/chipdb-5k.txt.gz
 	mkdir -p share/$(CHIPDB_SUBDIR)
 	cp $< $@
 override LDFLAGS += --embed-file share
@@ -31,7 +31,7 @@ endif
 $(PROGRAM_PREFIX)icetime$(EXE): icetime.o iceutil.o $(addsuffix .o, $(addprefix timings-, $(CHIPS)))
 	$(CXX) -o $@ $(LDFLAGS) $^ $(LDLIBS)
 
-timings-%.cc: timings.py ../icefuzz/timings_%.txt
+timings-%.cc: timings.py ../icefuzz/timings_%.txt.gz
 	$(PYTHON3) timings.py $* > $@
 
 .PRECIOUS: timings-%.cc
@@ -40,7 +40,7 @@ install: all
 	mkdir -p $(DESTDIR)$(PREFIX)/bin
 	mkdir -p $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox
 	cp $(PROGRAM_PREFIX)icetime$(EXE) $(DESTDIR)$(PREFIX)/bin/$(PROGRAM_PREFIX)icetime$(EXE)
-	cp ../icefuzz/timings_*.txt $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox/
+	cp ../icefuzz/timings_*.txt.gz $(DESTDIR)$(PREFIX)/share/$(PROGRAM_PREFIX)icebox/
 
 uninstall:
 	rm -f $(DESTDIR)$(PREFIX)/bin/$(PROGRAM_PREFIX)icetime$(EXE)
diff --git a/icetime/iceutil.cc b/icetime/iceutil.cc
index ea194b1..db41374 100644
--- a/icetime/iceutil.cc
+++ b/icetime/iceutil.cc
@@ -159,20 +159,20 @@ std::string find_chipdb(std::string config_device)
 #else
 		homepath += getenv("HOME");
 #endif
-		homepath += std::string(&PREFIX[1]) + "/" CHIPDB_SUBDIR "/chipdb-" + config_device + ".txt";
+		homepath += std::string(&PREFIX[1]) + "/" CHIPDB_SUBDIR "/chipdb-" + config_device + ".txt.gz";
 		if (verbose)
 			fprintf(stderr, "Looking for chipdb '%s' at %s\n", config_device.c_str(), homepath.c_str());
 		if (file_test_open(homepath))
 			return homepath;
 	}
 
-	std::string prefixpath = PREFIX "/share/" CHIPDB_SUBDIR "/chipdb-" + config_device + ".txt";
+	std::string prefixpath = PREFIX "/share/" CHIPDB_SUBDIR "/chipdb-" + config_device + ".txt.gz";
 	if (verbose)
 		fprintf(stderr, "Looking for chipdb '%s' at %s\n", config_device.c_str(), prefixpath.c_str());
 	if (file_test_open(prefixpath))
 		return prefixpath;
 
-	std::string relbinarypath = proc_self_dirname() + "../share/" CHIPDB_SUBDIR "/chipdb-" + config_device + ".txt";
+	std::string relbinarypath = proc_self_dirname() + "../share/" CHIPDB_SUBDIR "/chipdb-" + config_device + ".txt.gz";
 	if (verbose)
 		fprintf(stderr, "Looking for chipdb '%s' at %s\n", config_device.c_str(), relbinarypath.c_str());
 	if (file_test_open(relbinarypath))
diff --git a/icetime/timings.py b/icetime/timings.py
index 136f604..7520976 100644
--- a/icetime/timings.py
+++ b/icetime/timings.py
@@ -2,6 +2,7 @@
 
 import re
 import sys
+import zlib
 
 print("// auto-generated by timings.py from ../icefuzz/timings_*.txt")
 print("#include <string>")
@@ -57,5 +58,6 @@ else:
 	chips = "lp384 lp1k lp8k hx1k hx8k up5k".split()
 
 for db in chips:
-    with open("../icefuzz/timings_%s.txt" % db, "r") as f:
-        timings_to_c(db, f);
+    with open("../icefuzz/timings_%s.txt.gz" % db, "rb") as f:
+        decompressed = zlib.decompress(f.read())
+        timings_to_c(db, decompressed.decode('utf-8').splitlines());